[
  {
    "name": "Computer science, information & general works",
    "short": "0XX",
    "query": "0*",
    "children": [
      {
        "name": "Computer science, knowledge & systems",
        "short": "00X",
        "query": "00*",
        "children": [
          {
            "name": "Computer science, information & general works",
            "short": "000",
            "query": "000*",
            "count": 240
          },
          {
            "name": "Knowledge",
            "short": "001",
            "query": "001*",
            "count": 18674
          },
          {
            "name": "The book (writing, libraries, and book-related topics)",
            "short": "002",
            "query": "002*",
            "count": 1095
          },
          {
            "name": "Systems",
            "short": "003",
            "query": "003*",
            "count": 2290
          },
          {
            "name": "Data processing & computer science",
            "short": "004",
            "query": "004*",
            "count": 13329
          },
          {
            "name": "Computer programming, programs & data",
            "short": "005",
            "query": "005*",
            "count": 28411
          },
          {
            "name": "Special computer methods",
            "short": "006",
            "query": "006*",
            "count": 10284
          },
          {
            "name": "009 [Unassigned]",
            "short": "007–009",
            "query": "[007 TO 009]",
            "count": 471
          }
        ],
        "count": 73930
      },
      {
        "name": "Bibliographies",
        "short": "01X",
        "query": "01*",
        "children": [
          {
            "name": "Bibliography",
            "short": "010",
            "query": "010*",
            "count": 561
          },
          {
            "name": "Bibliographies",
            "short": "011",
            "query": "011*",
            "count": 2359
          },
          {
            "name": "Bibliographies of individuals",
            "short": "012",
            "query": "012*",
            "count": 743
          },
          {
            "name": "[Unassigned]",
            "short": "013",
            "query": "013*",
            "count": 298
          },
          {
            "name": "Bibliographies of anonymous & pseudonymous works",
            "short": "014",
            "query": "014*",
            "count": 56
          },
          {
            "name": "Bibliographies of works from specific places",
            "short": "015",
            "query": "015*",
            "count": 2257
          },
          {
            "name": "Bibliographies of works on specific subjects",
            "short": "016",
            "query": "016*",
            "count": 61871
          },
          {
            "name": "General subject catalogs",
            "short": "017",
            "query": "017*",
            "count": 1029
          },
          {
            "name": "Catalogs arranged by author, date, etc.",
            "short": "018",
            "query": "018*",
            "count": 683
          },
          {
            "name": "Dictionary catalogs",
            "short": "019",
            "query": "019*",
            "count": 268
          }
        ],
        "count": 69731
      },
      {
        "name": "Library & information sciences",
        "short": "02X",
        "query": "02*",
        "children": [
          {
            "name": "Library & information sciences",
            "short": "020",
            "query": "020*",
            "count": 2956
          },
          {
            "name": "Library relationships (with archives, information centers, etc.)",
            "short": "021",
            "query": "021*",
            "count": 1866
          },
          {
            "name": "Administration of physical plant",
            "short": "022",
            "query": "022*",
            "count": 876
          },
          {
            "name": "Personnel management",
            "short": "023",
            "query": "023*",
            "count": 460
          },
          {
            "name": "[Unassigned]",
            "short": "024",
            "query": "024*",
            "count": 57
          },
          {
            "name": "Library operations",
            "short": "025",
            "query": "025*",
            "count": 12257
          },
          {
            "name": "Libraries for specific subjects",
            "short": "026",
            "query": "026*",
            "count": 1968
          },
          {
            "name": "General libraries",
            "short": "027",
            "query": "027*",
            "count": 7811
          },
          {
            "name": "Reading & use of other information media",
            "short": "028",
            "query": "028*",
            "count": 2677
          },
          {
            "name": "[Unassigned]",
            "short": "029",
            "query": "029*",
            "count": 1449
          }
        ],
        "count": 32033
      },
      {
        "name": "Encyclopedias & books of facts",
        "short": "03X",
        "query": "03*",
        "children": [
          {
            "name": "General encyclopedic works",
            "short": "030",
            "query": "030*",
            "count": 148
          },
          {
            "name": "Encyclopedias in American English",
            "short": "031",
            "query": "031*",
            "count": 2044
          },
          {
            "name": "Encyclopedias in English",
            "short": "032",
            "query": "032*",
            "count": 763
          },
          {
            "name": "Encyclopedias in other Germanic languages",
            "short": "033",
            "query": "033*",
            "count": 148
          },
          {
            "name": "Encyclopedias in French, Occitan, and Catalan",
            "short": "034",
            "query": "034*",
            "count": 261
          },
          {
            "name": "Encyclopedias in Italian, Romanian, and related languages",
            "short": "035",
            "query": "035*",
            "count": 56
          },
          {
            "name": "Encyclopedias in Spanish & Portuguese",
            "short": "036",
            "query": "036*",
            "count": 124
          },
          {
            "name": "Encyclopedias in Slavic languages",
            "short": "037",
            "query": "037*",
            "count": 44
          },
          {
            "name": "Encyclopedias in Scandinavian languages",
            "short": "038",
            "query": "038*",
            "count": 33
          },
          {
            "name": "Encyclopedias in other languages",
            "short": "039",
            "query": "039*",
            "count": 124
          }
        ],
        "count": 3722
      },
      {
        "name": "Unassigned (formerly Biographies)",
        "short": "04X",
        "query": "04*",
        "count": 428
      },
      {
        "name": "Magazines, journals & serials",
        "short": "05X",
        "query": "05*",
        "children": [
          {
            "name": "General serial publications",
            "short": "050",
            "query": "050*",
            "count": 113
          },
          {
            "name": "Serials in American English",
            "short": "051",
            "query": "051*",
            "count": 1324
          },
          {
            "name": "Serials in English",
            "short": "052",
            "query": "052*",
            "count": 332
          },
          {
            "name": "Serials in other Germanic languages",
            "short": "053",
            "query": "053*",
            "count": 98
          },
          {
            "name": "Serials in French, Occitan, and Catalan",
            "short": "054",
            "query": "054*",
            "count": 376
          },
          {
            "name": "Serials in Italian, Romanian, and related languages",
            "short": "055",
            "query": "055*",
            "count": 91
          },
          {
            "name": "Serials in Spanish & Portuguese",
            "short": "056",
            "query": "056*",
            "count": 114
          },
          {
            "name": "Serials in Slavic languages",
            "short": "057",
            "query": "057*",
            "count": 19
          },
          {
            "name": "Serials in Scandinavian languages",
            "short": "058",
            "query": "058*",
            "count": 15
          },
          {
            "name": "Serials in other languages",
            "short": "059",
            "query": "059*",
            "count": 43
          }
        ],
        "count": 2522
      },
      {
        "name": "Associations, organizations & museums",
        "short": "06X",
        "query": "06*",
        "children": [
          {
            "name": "General organizations & museum science",
            "short": "060",
            "query": "060*",
            "count": 456
          },
          {
            "name": "Organizations in North America",
            "short": "061",
            "query": "061*",
            "count": 230
          },
          {
            "name": "Organizations in British Isles; in England",
            "short": "062",
            "query": "062*",
            "count": 127
          },
          {
            "name": "Organizations in central Europe; in Germany",
            "short": "063",
            "query": "063*",
            "count": 89
          },
          {
            "name": "Organizations in France & Monaco",
            "short": "064",
            "query": "064*",
            "count": 54
          },
          {
            "name": "Organizations in Italy & adjacent islands",
            "short": "065",
            "query": "065*",
            "count": 34
          },
          {
            "name": "Organizations in Iberian peninsula & adjacent islands",
            "short": "066",
            "query": "066*",
            "count": 23
          },
          {
            "name": "Organizations in eastern Europe; in Russia",
            "short": "067",
            "query": "067*",
            "count": 32
          },
          {
            "name": "Organizations in other geographic areas",
            "short": "068",
            "query": "068*",
            "count": 214
          },
          {
            "name": "Museum science",
            "short": "069",
            "query": "069*",
            "count": 2514
          }
        ],
        "count": 3765
      },
      {
        "name": "News media, journalism & publishing",
        "short": "07X",
        "query": "07*",
        "children": [
          {
            "name": "News media, journalism, and publishing",
            "short": "070",
            "query": "070*",
            "count": 10936
          },
          {
            "name": "Newspapers in North America",
            "short": "071",
            "query": "071*",
            "count": 1180
          },
          {
            "name": "Newspapers in British Isles; in England",
            "short": "072",
            "query": "072*",
            "count": 504
          },
          {
            "name": "Newspapers in central Europe; in Germany",
            "short": "073",
            "query": "073*",
            "count": 378
          },
          {
            "name": "Newspapers in France & Monaco",
            "short": "074",
            "query": "074*",
            "count": 240
          },
          {
            "name": "Newspapers in Italy & adjacent islands",
            "short": "075",
            "query": "075*",
            "count": 191
          },
          {
            "name": "Newspapers in Iberian peninsula & adjacent islands",
            "short": "076",
            "query": "076*",
            "count": 218
          },
          {
            "name": "Newspapers in eastern Europe; in Russia",
            "short": "077",
            "query": "077*",
            "count": 56
          },
          {
            "name": "Newspapers in Scandinavia",
            "short": "078",
            "query": "078*",
            "count": 54
          },
          {
            "name": "Newspapers in other geographic areas",
            "short": "079",
            "query": "079*",
            "count": 1120
          }
        ],
        "count": 14837
      },
      {
        "name": "Quotations",
        "short": "08X",
        "query": "08*",
        "children": [
          {
            "name": "General collections",
            "short": "080",
            "query": "080*",
            "count": 592
          },
          {
            "name": "Collections in American English",
            "short": "081",
            "query": "081*",
            "count": 3655
          },
          {
            "name": "Collections in English",
            "short": "082",
            "query": "082*",
            "count": 1977
          },
          {
            "name": "Collections in other Germanic languages",
            "short": "083",
            "query": "083*",
            "count": 656
          },
          {
            "name": "Collections in French, Occitan, Catalan",
            "short": "084",
            "query": "084*",
            "count": 489
          },
          {
            "name": "Collections in Italian, Romanian, & related languages",
            "short": "085",
            "query": "085*",
            "count": 124
          },
          {
            "name": "Collections in Spanish & Portuguese",
            "short": "086",
            "query": "086*",
            "count": 343
          },
          {
            "name": "Collections in Slavic languages",
            "short": "087",
            "query": "087*",
            "count": 112
          },
          {
            "name": "Collections in Scandinavian languages",
            "short": "088",
            "query": "088*",
            "count": 11
          },
          {
            "name": "Collections in other languages",
            "short": "089",
            "query": "089*",
            "count": 388
          }
        ],
        "count": 8333
      },
      {
        "name": "Manuscripts & rare books",
        "short": "09X",
        "query": "09*",
        "children": [
          {
            "name": "Manuscripts and rare books",
            "short": "090",
            "query": "090*",
            "count": 5510
          },
          {
            "name": "Manuscripts",
            "short": "091",
            "query": "091*",
            "count": 584
          },
          {
            "name": "Block books",
            "short": "092",
            "query": "092*",
            "count": 4682
          },
          {
            "name": "Incunabula",
            "short": "093",
            "query": "093*",
            "count": 98
          },
          {
            "name": "Printed books",
            "short": "094",
            "query": "094*",
            "count": 223
          },
          {
            "name": "Books notable for bindings",
            "short": "095",
            "query": "095*",
            "count": 145
          },
          {
            "name": "Books notable for illustrations",
            "short": "096",
            "query": "096*",
            "count": 259
          },
          {
            "name": "Books notable for ownership or origin",
            "short": "097",
            "query": "097*",
            "count": 92
          },
          {
            "name": "Prohibited works, forgeries, and hoaxes",
            "short": "098",
            "query": "098*",
            "count": 188
          },
          {
            "name": "Books notable for format",
            "short": "099",
            "query": "099*",
            "count": 38
          }
        ],
        "count": 11812
      }
    ],
    "count": 219835
  },
  {
    "name": "Philosophy & psychology",
    "short": "1XX",
    "query": "1*",
    "children": [
      {
        "name": "Philosophy",
        "short": "10X",
        "query": "10*",
        "children": [
          {
            "name": "Philosophy & psychology",
            "short": "100",
            "query": "100*",
            "count": 2156
          },
          {
            "name": "Theory of philosophy",
            "short": "101",
            "query": "101*",
            "count": 246
          },
          {
            "name": "Miscellany",
            "short": "102",
            "query": "102*",
            "count": 50
          },
          {
            "name": "Dictionaries & encyclopedias",
            "short": "103",
            "query": "103*",
            "count": 180
          },
          {
            "name": "[Unassigned]",
            "short": "104",
            "query": "104*",
            "count": 110
          },
          {
            "name": "Serial publications",
            "short": "105",
            "query": "105*",
            "count": 29
          },
          {
            "name": "Organizations & management",
            "short": "106",
            "query": "106*",
            "count": 24
          },
          {
            "name": "Education, research, related topics of philosophy",
            "short": "107",
            "query": "107*",
            "count": 109
          },
          {
            "name": "Groups of people",
            "short": "108",
            "query": "108*",
            "count": 267
          },
          {
            "name": "History & collected biography",
            "short": "109",
            "query": "109*",
            "count": 362
          }
        ],
        "count": 3495
      },
      {
        "name": "Metaphysics",
        "short": "11X",
        "query": "11*",
        "children": [
          {
            "name": "Metaphysics",
            "short": "110",
            "query": "110*",
            "count": 1287
          },
          {
            "name": "Ontology",
            "short": "111",
            "query": "111*",
            "count": 2711
          },
          {
            "name": "No longer used—formerly Methodology",
            "short": "112",
            "query": "112*",
            "count": 40
          },
          {
            "name": "Cosmology (Philosophy of nature)",
            "short": "113",
            "query": "113*",
            "count": 668
          },
          {
            "name": "Space",
            "short": "114",
            "query": "114*",
            "count": 52
          },
          {
            "name": "Time",
            "short": "115",
            "query": "115*",
            "count": 442
          },
          {
            "name": "Change",
            "short": "116",
            "query": "116*",
            "count": 82
          },
          {
            "name": "Structure",
            "short": "117",
            "query": "117*",
            "count": 77
          },
          {
            "name": "Force and energy",
            "short": "118",
            "query": "118*",
            "count": 30
          },
          {
            "name": "Number and quantity",
            "short": "119",
            "query": "119*",
            "count": 19
          }
        ],
        "count": 5382
      },
      {
        "name": "Epistemology",
        "short": "12X",
        "query": "12*",
        "children": [
          {
            "name": "Epistemology, causation, and humankind",
            "short": "120",
            "query": "120*",
            "count": 78
          },
          {
            "name": "Epistemology (Theory of knowledge)",
            "short": "121",
            "query": "121*",
            "count": 2999
          },
          {
            "name": "Causation",
            "short": "122",
            "query": "122*",
            "count": 142
          },
          {
            "name": "Determinism and indeterminism",
            "short": "123",
            "query": "123*",
            "count": 484
          },
          {
            "name": "Teleology",
            "short": "124",
            "query": "124*",
            "count": 72
          },
          {
            "name": "No longer used—formerly Infinity",
            "short": "125",
            "query": "125*",
            "count": 13
          },
          {
            "name": "The self",
            "short": "126",
            "query": "126*",
            "count": 619
          },
          {
            "name": "The unconscious & the subconscious",
            "short": "127",
            "query": "127*",
            "count": 11
          },
          {
            "name": "Humankind",
            "short": "128",
            "query": "128*",
            "count": 3814
          },
          {
            "name": "Origin & destiny of individual souls",
            "short": "129",
            "query": "129*",
            "count": 169
          }
        ],
        "count": 8379
      },
      {
        "name": "Parapsychology & occultism",
        "short": "13X",
        "query": "13*",
        "children": [
          {
            "name": "Parapsychology & occultism",
            "short": "130",
            "query": "130*",
            "count": 292
          },
          {
            "name": "Parapsychological and occult methods for achieving well-being, happiness, success",
            "short": "131",
            "query": "131*",
            "count": 1684
          },
          {
            "name": "No longer used—formerly Mental derangements",
            "short": "132",
            "query": "132*",
            "count": 275
          },
          {
            "name": "Specific topics in parapsychology & occultism",
            "short": "133",
            "query": "133*",
            "count": 13558
          },
          {
            "name": "No longer used—formerly Mesmerism & Clairvoyance",
            "short": "134",
            "query": "134*",
            "count": 82
          },
          {
            "name": "Dreams & mysteries",
            "short": "135",
            "query": "135*",
            "count": 505
          },
          {
            "name": "No longer used—formerly Mental characteristics",
            "short": "136",
            "query": "136*",
            "count": 963
          },
          {
            "name": "Divinatory graphology",
            "short": "137",
            "query": "137*",
            "count": 492
          },
          {
            "name": "Physiognomy",
            "short": "138",
            "query": "138*",
            "count": 128
          },
          {
            "name": "Phrenology",
            "short": "139",
            "query": "139*",
            "count": 39
          }
        ],
        "count": 17967
      },
      {
        "name": "Philosophical schools of thought",
        "short": "14X",
        "query": "14*",
        "children": [
          {
            "name": "Specific philosophical schools and viewpoints",
            "short": "140",
            "query": "140*",
            "count": 84
          },
          {
            "name": "Idealism & related systems & doctrines",
            "short": "141",
            "query": "141*",
            "count": 319
          },
          {
            "name": "Critical philosophy",
            "short": "142",
            "query": "142*",
            "count": 688
          },
          {
            "name": "Bergsonism & intuitionism",
            "short": "143",
            "query": "143*",
            "count": 9
          },
          {
            "name": "Humanism & related systems & doctrines",
            "short": "144",
            "query": "144*",
            "count": 416
          },
          {
            "name": "Sensationalism",
            "short": "145",
            "query": "145*",
            "count": 22
          },
          {
            "name": "Naturalism & related systems & doctrines",
            "short": "146",
            "query": "146*",
            "count": 548
          },
          {
            "name": "Pantheism & related systems & doctrines",
            "short": "147",
            "query": "147*",
            "count": 100
          },
          {
            "name": "Dogmatism, eclecticism, liberalism, syncretism, & traditionalism",
            "short": "148",
            "query": "148*",
            "count": 28
          },
          {
            "name": "Other philosophical systems & doctrines",
            "short": "149",
            "query": "149*",
            "count": 1304
          }
        ],
        "count": 3512
      },
      {
        "name": "Psychology",
        "short": "15X",
        "query": "15*",
        "children": [
          {
            "name": "Psychology",
            "short": "150",
            "query": "150*",
            "count": 8331
          },
          {
            "name": "No longer used—formerly Intellect",
            "short": "151",
            "query": "151*",
            "count": 269
          },
          {
            "name": "Sensory perception, movement, emotions, & physiological drives",
            "short": "152",
            "query": "152*",
            "count": 4010
          },
          {
            "name": "Conscious mental processes & intelligence",
            "short": "153",
            "query": "153*",
            "count": 7123
          },
          {
            "name": "Subconscious & altered states & processes",
            "short": "154",
            "query": "154*",
            "count": 1391
          },
          {
            "name": "Differential & developmental psychology",
            "short": "155",
            "query": "155*",
            "count": 13498
          },
          {
            "name": "Comparative psychology",
            "short": "156",
            "query": "156*",
            "count": 447
          },
          {
            "name": "No longer used—formerly Emotions",
            "short": "157",
            "query": "157*",
            "count": 589
          },
          {
            "name": "Applied psychology",
            "short": "158",
            "query": "158*",
            "count": 9684
          },
          {
            "name": "No longer used—formerly Will",
            "short": "159",
            "query": "159*",
            "count": 1108
          }
        ],
        "count": 45480
      },
      {
        "name": "Philosophical logic",
        "short": "16X",
        "query": "16*",
        "children": [
          {
            "name": "Philosophical logic",
            "short": "160",
            "query": "160*",
            "count": 1941
          },
          {
            "name": "Induction",
            "short": "161",
            "query": "161*",
            "count": 80
          },
          {
            "name": "Deduction",
            "short": "162",
            "query": "162*",
            "count": 30
          },
          {
            "name": "164 Not assigned or no longer used",
            "short": "163–164",
            "query": "[163 TO 164]",
            "count": 192
          },
          {
            "name": "Fallacies & sources of error",
            "short": "165",
            "query": "165*",
            "count": 100
          },
          {
            "name": "Syllogisms",
            "short": "166",
            "query": "166*",
            "count": 32
          },
          {
            "name": "Hypotheses",
            "short": "167",
            "query": "167*",
            "count": 4
          },
          {
            "name": "Argument & persuasion",
            "short": "168",
            "query": "168*",
            "count": 98
          },
          {
            "name": "Analogy",
            "short": "169",
            "query": "169*",
            "count": 31
          }
        ],
        "count": 2492
      },
      {
        "name": "Ethics",
        "short": "17X",
        "query": "17*",
        "children": [
          {
            "name": "Ethics (Moral philosophy)",
            "short": "170",
            "query": "170*",
            "count": 4797
          },
          {
            "name": "Ethical systems",
            "short": "171",
            "query": "171*",
            "count": 1333
          },
          {
            "name": "Political ethics",
            "short": "172",
            "query": "172*",
            "count": 1272
          },
          {
            "name": "Ethics of family relationships",
            "short": "173",
            "query": "173*",
            "count": 298
          },
          {
            "name": "Occupational ethics",
            "short": "174",
            "query": "174*",
            "count": 5317
          },
          {
            "name": "Ethics of recreation, leisure, public performances, communication",
            "short": "175",
            "query": "175*",
            "count": 190
          },
          {
            "name": "Ethics of sex & reproduction",
            "short": "176",
            "query": "176*",
            "count": 552
          },
          {
            "name": "Ethics of social relations",
            "short": "177",
            "query": "177*",
            "count": 849
          },
          {
            "name": "Ethics of consumption",
            "short": "178",
            "query": "178*",
            "count": 784
          },
          {
            "name": "Other ethical norms",
            "short": "179",
            "query": "179*",
            "count": 2190
          }
        ],
        "count": 17375
      },
      {
        "name": "Ancient, medieval, & Eastern philosophy",
        "short": "18X",
        "query": "18*",
        "children": [
          {
            "name": "Ancient, medieval, eastern philosophy",
            "short": "180",
            "query": "180*",
            "count": 523
          },
          {
            "name": "Eastern philosophy",
            "short": "181",
            "query": "181*",
            "count": 3707
          },
          {
            "name": "Pre-Socratic Greek philosophies",
            "short": "182",
            "query": "182*",
            "count": 354
          },
          {
            "name": "Sophistic, Socratic, related Greek philosophies",
            "short": "183",
            "query": "183*",
            "count": 264
          },
          {
            "name": "Platonic philosophy",
            "short": "184",
            "query": "184*",
            "count": 744
          },
          {
            "name": "Aristotelian philosophy",
            "short": "185",
            "query": "185*",
            "count": 330
          },
          {
            "name": "Skeptic & Neoplatonic philosophies",
            "short": "186",
            "query": "186*",
            "count": 351
          },
          {
            "name": "Epicurean philosophy",
            "short": "187",
            "query": "187*",
            "count": 121
          },
          {
            "name": "Stoic philosophy",
            "short": "188",
            "query": "188*",
            "count": 216
          },
          {
            "name": "Medieval Western philosophy",
            "short": "189",
            "query": "189*",
            "count": 981
          }
        ],
        "count": 7561
      },
      {
        "name": "Modern Western philosophy (19th-century, 20th-century)",
        "short": "19X",
        "query": "19*",
        "children": [
          {
            "name": "Modern Western & other noneastern philosophy",
            "short": "190",
            "query": "190*",
            "count": 1701
          },
          {
            "name": "Philosophy of the United States and Canada",
            "short": "191",
            "query": "191*",
            "count": 1368
          },
          {
            "name": "Philosophy of the British Isles",
            "short": "192",
            "query": "192*",
            "count": 2039
          },
          {
            "name": "Philosophy of Germany and Austria",
            "short": "193",
            "query": "193*",
            "count": 4496
          },
          {
            "name": "Philosophy of France",
            "short": "194",
            "query": "194*",
            "count": 3546
          },
          {
            "name": "Philosophy of Italy",
            "short": "195",
            "query": "195*",
            "count": 852
          },
          {
            "name": "Philosophy of Spain and Portugal",
            "short": "196",
            "query": "196*",
            "count": 343
          },
          {
            "name": "Philosophy of Russia",
            "short": "197",
            "query": "197*",
            "count": 277
          },
          {
            "name": "Philosophy of Scandinavia & Finland",
            "short": "198",
            "query": "198*",
            "count": 397
          },
          {
            "name": "Philosophy in other geographic areas",
            "short": "199",
            "query": "199*",
            "count": 1160
          }
        ],
        "count": 16125
      }
    ],
    "count": 125686
  },
  {
    "name": "Religion",
    "short": "2XX",
    "query": "2*",
    "children": [
      {
        "name": "Religion",
        "short": "20X",
        "query": "20*",
        "children": [
          {
            "name": "Religion",
            "short": "200",
            "query": "200*",
            "count": 5039
          },
          {
            "name": "Religious mythology, general classes of religion, interreligious relations and attitudes, social theology",
            "short": "201",
            "query": "201*",
            "count": 1982
          },
          {
            "name": "Doctrines",
            "short": "202",
            "query": "202*",
            "count": 444
          },
          {
            "name": "Public worship and other practices",
            "short": "203",
            "query": "203*",
            "count": 280
          },
          {
            "name": "Religious experience, life, practice",
            "short": "204",
            "query": "204*",
            "count": 903
          },
          {
            "name": "Religious ethics",
            "short": "205",
            "query": "205*",
            "count": 104
          },
          {
            "name": "Leaders and organization",
            "short": "206",
            "query": "206*",
            "count": 55
          },
          {
            "name": "Missions and religious education",
            "short": "207",
            "query": "207*",
            "count": 808
          },
          {
            "name": "Sources",
            "short": "208",
            "query": "208*",
            "count": 413
          },
          {
            "name": "Sects and reform movements",
            "short": "209",
            "query": "209*",
            "count": 737
          }
        ],
        "count": 10684
      },
      {
        "name": "Philosophy & theory of religion",
        "short": "21X",
        "query": "21*",
        "children": [
          {
            "name": "Philosophy & theory of religion",
            "short": "210",
            "query": "210*",
            "count": 643
          },
          {
            "name": "Concepts of God",
            "short": "211",
            "query": "211*",
            "count": 1064
          },
          {
            "name": "Existence, ways of knowing God, attributes of God",
            "short": "212",
            "query": "212*",
            "count": 495
          },
          {
            "name": "Creation",
            "short": "213",
            "query": "213*",
            "count": 242
          },
          {
            "name": "Theodicy",
            "short": "214",
            "query": "214*",
            "count": 68
          },
          {
            "name": "Science & religion",
            "short": "215",
            "query": "215*",
            "count": 649
          },
          {
            "name": "No longer used—formerly Evil",
            "short": "216",
            "query": "216*",
            "count": 34
          },
          {
            "name": "No longer used—formerly Prayer",
            "short": "217",
            "query": "217*",
            "count": 3
          },
          {
            "name": "Humankind",
            "short": "218",
            "query": "218*",
            "count": 67
          },
          {
            "name": "No longer used—formerly Analogies",
            "short": "219",
            "query": "219*",
            "count": 32
          }
        ],
        "count": 3271
      },
      {
        "name": "The Bible",
        "short": "22X",
        "query": "22*",
        "children": [
          {
            "name": "Bible",
            "short": "220",
            "query": "220*",
            "count": 9446
          },
          {
            "name": "Old Testament (Tanakh)",
            "short": "221",
            "query": "221*",
            "count": 3392
          },
          {
            "name": "Historical books of Old Testament",
            "short": "222",
            "query": "222*",
            "count": 3989
          },
          {
            "name": "Poetic books of Old Testament",
            "short": "223",
            "query": "223*",
            "count": 2053
          },
          {
            "name": "Prophetic books of Old Testament",
            "short": "224",
            "query": "224*",
            "count": 2099
          },
          {
            "name": "New Testament",
            "short": "225",
            "query": "225*",
            "count": 3177
          },
          {
            "name": "Gospels & Acts",
            "short": "226",
            "query": "226*",
            "count": 5728
          },
          {
            "name": "Epistles",
            "short": "227",
            "query": "227*",
            "count": 3546
          },
          {
            "name": "Revelation (Apocalypse)",
            "short": "228",
            "query": "228*",
            "count": 800
          },
          {
            "name": "Apocrypha, pseudepigrapha, & intertestamental works",
            "short": "229",
            "query": "229*",
            "count": 773
          }
        ],
        "count": 34483
      },
      {
        "name": "Christianity",
        "short": "23X",
        "query": "23*",
        "children": [
          {
            "name": "Christianity",
            "short": "230",
            "query": "230*",
            "count": 11761
          },
          {
            "name": "God",
            "short": "231",
            "query": "231*",
            "count": 4970
          },
          {
            "name": "Jesus Christ & his family",
            "short": "232",
            "query": "232*",
            "count": 8321
          },
          {
            "name": "Humankind",
            "short": "233",
            "query": "233*",
            "count": 1206
          },
          {
            "name": "Salvation & grace",
            "short": "234",
            "query": "234*",
            "count": 3889
          },
          {
            "name": "Spiritual beings",
            "short": "235",
            "query": "235*",
            "count": 885
          },
          {
            "name": "Eschatology",
            "short": "236",
            "query": "236*",
            "count": 1990
          },
          {
            "name": "No longer used—formerly Future state",
            "short": "237",
            "query": "237*",
            "count": 95
          },
          {
            "name": "Creeds, confessions of faith, covenants, & catechisms",
            "short": "238",
            "query": "238*",
            "count": 1136
          },
          {
            "name": "Apologetics & polemics",
            "short": "239",
            "query": "239*",
            "count": 1114
          }
        ],
        "count": 35124
      },
      {
        "name": "Christian practice & observance",
        "short": "24X",
        "query": "24*",
        "children": [
          {
            "name": "Christian moral and devotional theology",
            "short": "240",
            "query": "240*",
            "count": 134
          },
          {
            "name": "Christian ethics",
            "short": "241",
            "query": "241*",
            "count": 4804
          },
          {
            "name": "Devotional literature",
            "short": "242",
            "query": "242*",
            "count": 9448
          },
          {
            "name": "Evangelistic writings for individuals and families",
            "short": "243",
            "query": "243*",
            "count": 194
          },
          {
            "name": "No longer used—formerly Religious fiction",
            "short": "244",
            "query": "244*",
            "count": 56
          },
          {
            "name": "No longer used—formerly Hymnology",
            "short": "245",
            "query": "245*",
            "count": 493
          },
          {
            "name": "Use of art in Christianity",
            "short": "246",
            "query": "246*",
            "count": 796
          },
          {
            "name": "Church furnishings & related articles",
            "short": "247",
            "query": "247*",
            "count": 141
          },
          {
            "name": "Christian experience, practice, life",
            "short": "248",
            "query": "248*",
            "count": 21797
          },
          {
            "name": "Christian observances in family life",
            "short": "249",
            "query": "249*",
            "count": 409
          }
        ],
        "count": 38117
      },
      {
        "name": "Christian orders & local church",
        "short": "25X",
        "query": "25*",
        "children": [
          {
            "name": "Local Christian church and Christian religious orders",
            "short": "250",
            "query": "250*",
            "count": 484
          },
          {
            "name": "Preaching (Homiletics)",
            "short": "251",
            "query": "251*",
            "count": 1573
          },
          {
            "name": "Texts of sermons",
            "short": "252",
            "query": "252*",
            "count": 4664
          },
          {
            "name": "Pastoral office and work (Pastoral theology)",
            "short": "253",
            "query": "253*",
            "count": 3656
          },
          {
            "name": "Parish administration",
            "short": "254",
            "query": "254*",
            "count": 1646
          },
          {
            "name": "Religious congregations & orders",
            "short": "255",
            "query": "255*",
            "count": 1354
          },
          {
            "name": "No longer used—formerly Religious societies",
            "short": "256",
            "query": "256*",
            "count": 10
          },
          {
            "name": "No longer used—formerly Parochial schools, libraries, etc.",
            "short": "257",
            "query": "257*",
            "count": 4
          },
          {
            "name": "No longer used—formerly Parochial medicine",
            "short": "258",
            "query": "258*",
            "count": 81
          },
          {
            "name": "Pastoral care of families, of specific groups of people",
            "short": "259",
            "query": "259*",
            "count": 1592
          }
        ],
        "count": 15004
      },
      {
        "name": "Social & ecclesiastical theology",
        "short": "26X",
        "query": "26*",
        "children": [
          {
            "name": "Christian social and ecclesiastical theology",
            "short": "260",
            "query": "260*",
            "count": 705
          },
          {
            "name": "Social theology and interreligious relations and attitudes",
            "short": "261",
            "query": "261*",
            "count": 12113
          },
          {
            "name": "Ecclesiology",
            "short": "262",
            "query": "262*",
            "count": 6703
          },
          {
            "name": "Days, times, places of religious observance",
            "short": "263",
            "query": "263*",
            "count": 1159
          },
          {
            "name": "Public worship",
            "short": "264",
            "query": "264*",
            "count": 6070
          },
          {
            "name": "Sacraments, other rites & acts",
            "short": "265",
            "query": "265*",
            "count": 1565
          },
          {
            "name": "Missions",
            "short": "266",
            "query": "266*",
            "count": 7159
          },
          {
            "name": "Associations for religious work",
            "short": "267",
            "query": "267*",
            "count": 1391
          },
          {
            "name": "Religious education",
            "short": "268",
            "query": "268*",
            "count": 2752
          },
          {
            "name": "Spiritual renewal",
            "short": "269",
            "query": "269*",
            "count": 1790
          }
        ],
        "count": 41263
      },
      {
        "name": "History of Christianity",
        "short": "27X",
        "query": "27*",
        "children": [
          {
            "name": "History, geographic treatment, biography of Christianity",
            "short": "270",
            "query": "270*",
            "count": 4806
          },
          {
            "name": "Religious congregations and orders in church history",
            "short": "271",
            "query": "271*",
            "count": 6273
          },
          {
            "name": "Persecutions in church history",
            "short": "272",
            "query": "272*",
            "count": 885
          },
          {
            "name": "Doctrinal controversies and heresies in general church history",
            "short": "273",
            "query": "273*",
            "count": 647
          },
          {
            "name": "Christianity in Europe",
            "short": "274",
            "query": "274*",
            "count": 2634
          },
          {
            "name": "Christianity in Asia",
            "short": "275",
            "query": "275*",
            "count": 802
          },
          {
            "name": "Christianity in Africa",
            "short": "276",
            "query": "276*",
            "count": 560
          },
          {
            "name": "Christianity in North America",
            "short": "277",
            "query": "277*",
            "count": 1508
          },
          {
            "name": "Christianity in South America",
            "short": "278",
            "query": "278*",
            "count": 150
          },
          {
            "name": "History of Christianity in other areas",
            "short": "279",
            "query": "279*",
            "count": 127
          }
        ],
        "count": 18322
      },
      {
        "name": "Christian denominations",
        "short": "28X",
        "query": "28*",
        "children": [
          {
            "name": "Denominations and sects of Christian church",
            "short": "280",
            "query": "280*",
            "count": 1838
          },
          {
            "name": "Early church & Eastern churches",
            "short": "281",
            "query": "281*",
            "count": 1675
          },
          {
            "name": "Roman Catholic Church",
            "short": "282",
            "query": "282*",
            "count": 11361
          },
          {
            "name": "Anglican churches",
            "short": "283",
            "query": "283*",
            "count": 3486
          },
          {
            "name": "Protestant denominations of Continental origin & related body",
            "short": "284",
            "query": "284*",
            "count": 2156
          },
          {
            "name": "Presbyterian churches, Reformed churches centered in America, Congregational churches",
            "short": "285",
            "query": "285*",
            "count": 2511
          },
          {
            "name": "Baptist, Restoration Movement, Adventist churches",
            "short": "286",
            "query": "286*",
            "count": 2405
          },
          {
            "name": "Methodist churches; churches related to Methodism",
            "short": "287",
            "query": "287*",
            "count": 2300
          },
          {
            "name": "No longer used—formerly Unitarian",
            "short": "288",
            "query": "288*",
            "count": 85
          },
          {
            "name": "Other denominations & sects",
            "short": "289",
            "query": "289*",
            "count": 4835
          }
        ],
        "count": 32582
      },
      {
        "name": "Other religions",
        "short": "29X",
        "query": "29*",
        "children": [
          {
            "name": "Other religions",
            "short": "290",
            "query": "290*",
            "count": 453
          },
          {
            "name": "No longer used—formerly Comparative religion",
            "short": "291",
            "query": "291*",
            "count": 6734
          },
          {
            "name": "Classical religion (Greek & Roman religion)",
            "short": "292",
            "query": "292*",
            "count": 1331
          },
          {
            "name": "Germanic religion",
            "short": "293",
            "query": "293*",
            "count": 215
          },
          {
            "name": "Religions of Indic origin",
            "short": "294",
            "query": "294*",
            "count": 13311
          },
          {
            "name": "Zoroastrianism (Mazdaism, Parseeism)",
            "short": "295",
            "query": "295*",
            "count": 238
          },
          {
            "name": "Judaism",
            "short": "296",
            "query": "296*",
            "count": 9995
          },
          {
            "name": "Islam, Bábism & Bahá'í Faith",
            "short": "297",
            "query": "297*",
            "count": 7007
          },
          {
            "name": "No longer used—formerly Mormonism",
            "short": "298",
            "query": "298*",
            "count": 25
          },
          {
            "name": "Religions not provided for elsewhere",
            "short": "299",
            "query": "299*",
            "count": 7074
          }
        ],
        "count": 46211
      }
    ],
    "count": 271662
  },
  {
    "name": "Social sciences",
    "short": "3XX",
    "query": "3*",
    "children": [
      {
        "name": "Social sciences, sociology & anthropology",
        "short": "30X",
        "query": "30*",
        "children": [
          {
            "name": "Social sciences",
            "short": "300",
            "query": "300*",
            "count": 7225
          },
          {
            "name": "Sociology & anthropology",
            "short": "301",
            "query": "301*",
            "count": 45136
          },
          {
            "name": "Social interaction",
            "short": "302",
            "query": "302*",
            "count": 12778
          },
          {
            "name": "Social processes",
            "short": "303",
            "query": "303*",
            "count": 13338
          },
          {
            "name": "Factors affecting social behavior",
            "short": "304",
            "query": "304*",
            "count": 10245
          },
          {
            "name": "Groups of people",
            "short": "305",
            "query": "305*",
            "count": 40148
          },
          {
            "name": "Culture & institutions",
            "short": "306",
            "query": "306*",
            "count": 36833
          },
          {
            "name": "Communities",
            "short": "307",
            "query": "307*",
            "count": 10642
          },
          {
            "name": "No longer used—formerly Polygraphy",
            "short": "308",
            "query": "308*",
            "count": 233
          },
          {
            "name": "No longer used—formerly History of sociology",
            "short": "309",
            "query": "309*",
            "count": 10819
          }
        ],
        "count": 184988
      },
      {
        "name": "Statistics",
        "short": "31X",
        "query": "31*",
        "children": [
          {
            "name": "Collections of general statistics",
            "short": "310",
            "query": "310*",
            "count": 284
          },
          {
            "name": "No longer used—formerly Theory and methods",
            "short": "311",
            "query": "311*",
            "count": 519
          },
          {
            "name": "No longer used—formerly Population",
            "short": "312",
            "query": "312*",
            "count": 3286
          },
          {
            "name": "No longer used—formerly Special topics",
            "short": "313",
            "query": "313*",
            "count": 13
          },
          {
            "name": "General statistics of Europe",
            "short": "314",
            "query": "314*",
            "count": 540
          },
          {
            "name": "General statistics of Asia",
            "short": "315",
            "query": "315*",
            "count": 341
          },
          {
            "name": "General statistics of Africa",
            "short": "316",
            "query": "316*",
            "count": 125
          },
          {
            "name": "General statistics of North America",
            "short": "317",
            "query": "317*",
            "count": 615
          },
          {
            "name": "General statistics of South America",
            "short": "318",
            "query": "318*",
            "count": 81
          },
          {
            "name": "General statistics of Australasia, Pacific Ocean islands, Atlantic Ocean islands, Arctic islands, Antarctica",
            "short": "319",
            "query": "319*",
            "count": 110
          }
        ],
        "count": 5842
      },
      {
        "name": "Political science",
        "short": "32X",
        "query": "32*",
        "children": [
          {
            "name": "Political science (Politics & government)",
            "short": "320",
            "query": "320*",
            "count": 40783
          },
          {
            "name": "Systems of governments & states",
            "short": "321",
            "query": "321*",
            "count": 4574
          },
          {
            "name": "Relation of state to organized groups & their members",
            "short": "322",
            "query": "322*",
            "count": 5896
          },
          {
            "name": "Civil & political rights",
            "short": "323",
            "query": "323*",
            "count": 12582
          },
          {
            "name": "The political process",
            "short": "324",
            "query": "324*",
            "count": 16876
          },
          {
            "name": "International migration & colonization",
            "short": "325",
            "query": "325*",
            "count": 6745
          },
          {
            "name": "Slavery & emancipation",
            "short": "326",
            "query": "326*",
            "count": 753
          },
          {
            "name": "International relations",
            "short": "327",
            "query": "327*",
            "count": 32708
          },
          {
            "name": "The legislative process",
            "short": "328",
            "query": "328*",
            "count": 9292
          },
          {
            "name": "Not assigned or no longer used",
            "short": "329",
            "query": "329*",
            "count": 4538
          }
        ],
        "count": 133889
      },
      {
        "name": "Economics",
        "short": "33X",
        "query": "33*",
        "children": [
          {
            "name": "Economics",
            "short": "330",
            "query": "330*",
            "count": 36663
          },
          {
            "name": "Labor economics",
            "short": "331",
            "query": "331*",
            "count": 42698
          },
          {
            "name": "Financial economics",
            "short": "332",
            "query": "332*",
            "count": 37237
          },
          {
            "name": "Economics of land & energy",
            "short": "333",
            "query": "333*",
            "count": 41869
          },
          {
            "name": "Cooperatives",
            "short": "334",
            "query": "334*",
            "count": 2895
          },
          {
            "name": "Socialism & related systems",
            "short": "335",
            "query": "335*",
            "count": 10467
          },
          {
            "name": "Public finance",
            "short": "336",
            "query": "336*",
            "count": 12200
          },
          {
            "name": "International economics",
            "short": "337",
            "query": "337*",
            "count": 5564
          },
          {
            "name": "Production",
            "short": "338",
            "query": "338*",
            "count": 95838
          },
          {
            "name": "Macroeconomics & related topics",
            "short": "339",
            "query": "339*",
            "count": 7938
          }
        ],
        "count": 290880
      },
      {
        "name": "Law",
        "short": "34X",
        "query": "34*",
        "children": [
          {
            "name": "Law",
            "short": "340",
            "query": "340*",
            "count": 16331
          },
          {
            "name": "Law of nations",
            "short": "341",
            "query": "341*",
            "count": 22987
          },
          {
            "name": "Constitutional & administrative law",
            "short": "342",
            "query": "342*",
            "count": 29102
          },
          {
            "name": "Military, defense, public property, public finance, tax, commerce (trade), industrial law",
            "short": "343",
            "query": "343*",
            "count": 32617
          },
          {
            "name": "Labor, social service, education, cultural law",
            "short": "344",
            "query": "344*",
            "count": 56550
          },
          {
            "name": "Criminal law",
            "short": "345",
            "query": "345*",
            "count": 21419
          },
          {
            "name": "Private law",
            "short": "346",
            "query": "346*",
            "count": 55734
          },
          {
            "name": "Procedure & courts",
            "short": "347",
            "query": "347*",
            "count": 58595
          },
          {
            "name": "Laws, regulations, cases",
            "short": "348",
            "query": "348*",
            "count": 11791
          },
          {
            "name": "Law of specific jurisdictions, areas, socioeconomic regions, regional intergovernmental organizations",
            "short": "349",
            "query": "349*",
            "count": 6097
          }
        ],
        "count": 230049
      },
      {
        "name": "Public administration & military science",
        "short": "35X",
        "query": "35*",
        "children": [
          {
            "name": "Public administration & military science",
            "short": "350",
            "query": "350*",
            "count": 2368
          },
          {
            "name": "Public administration",
            "short": "351",
            "query": "351*",
            "count": 3497
          },
          {
            "name": "General considerations of public administration",
            "short": "352",
            "query": "352*",
            "count": 10372
          },
          {
            "name": "Specific fields of public administration",
            "short": "353",
            "query": "353*",
            "count": 19499
          },
          {
            "name": "Public administration of economy & environment",
            "short": "354",
            "query": "354*",
            "count": 9502
          },
          {
            "name": "Military science",
            "short": "355",
            "query": "355*",
            "count": 25430
          },
          {
            "name": "Foot forces & warfare",
            "short": "356",
            "query": "356*",
            "count": 1239
          },
          {
            "name": "Mounted forces & warfare",
            "short": "357",
            "query": "357*",
            "count": 371
          },
          {
            "name": "Air & other specialized forces & warfare; engineering & related services",
            "short": "358",
            "query": "358*",
            "count": 5552
          },
          {
            "name": "Sea forces & warfare",
            "short": "359",
            "query": "359*",
            "count": 5443
          }
        ],
        "count": 82863
      },
      {
        "name": "Social problems & social services",
        "short": "36X",
        "query": "36*",
        "children": [
          {
            "name": "Social problems & services; associations",
            "short": "360",
            "query": "360*",
            "count": 605
          },
          {
            "name": "Social problems & services",
            "short": "361",
            "query": "361*",
            "count": 12350
          },
          {
            "name": "Social problems of & services to groups of people",
            "short": "362",
            "query": "362*",
            "count": 60943
          },
          {
            "name": "Other social problems & services",
            "short": "363",
            "query": "363*",
            "count": 45035
          },
          {
            "name": "Criminology",
            "short": "364",
            "query": "364*",
            "count": 22642
          },
          {
            "name": "Penal & related institutions",
            "short": "365",
            "query": "365*",
            "count": 4783
          },
          {
            "name": "Secret associations & societies",
            "short": "366",
            "query": "366*",
            "count": 1986
          },
          {
            "name": "General clubs",
            "short": "367",
            "query": "367*",
            "count": 551
          },
          {
            "name": "Insurance",
            "short": "368",
            "query": "368*",
            "count": 7650
          },
          {
            "name": "Associations",
            "short": "369",
            "query": "369*",
            "count": 1515
          }
        ],
        "count": 157601
      },
      {
        "name": "Education",
        "short": "37X",
        "query": "37*",
        "children": [
          {
            "name": "Education",
            "short": "370",
            "query": "370*",
            "count": 29925
          },
          {
            "name": "Schools & their activities; special education",
            "short": "371",
            "query": "371*",
            "count": 38034
          },
          {
            "name": "Primary education (elementary education)",
            "short": "372",
            "query": "372*",
            "count": 21007
          },
          {
            "name": "Secondary education",
            "short": "373",
            "query": "373*",
            "count": 7009
          },
          {
            "name": "Adult education",
            "short": "374",
            "query": "374*",
            "count": 4437
          },
          {
            "name": "Curricula",
            "short": "375",
            "query": "375*",
            "count": 2051
          },
          {
            "name": "No longer used—formerly Education of women",
            "short": "376",
            "query": "376*",
            "count": 757
          },
          {
            "name": "No longer used—formerly Ethical education",
            "short": "377",
            "query": "377*",
            "count": 1602
          },
          {
            "name": "Higher education (Tertiary education)",
            "short": "378",
            "query": "378*",
            "count": 24813
          },
          {
            "name": "Public policy issues in education",
            "short": "379",
            "query": "379*",
            "count": 8010
          }
        ],
        "count": 136201
      },
      {
        "name": "Commerce, communications, & transportation",
        "short": "38X",
        "query": "38*",
        "children": [
          {
            "name": "Commerce, communications, transportation",
            "short": "380",
            "query": "380*",
            "count": 7658
          },
          {
            "name": "Commerce (Trade)",
            "short": "381",
            "query": "381*",
            "count": 6872
          },
          {
            "name": "International commerce (Foreign trade)",
            "short": "382",
            "query": "382*",
            "count": 12331
          },
          {
            "name": "Postal communication",
            "short": "383",
            "query": "383*",
            "count": 1710
          },
          {
            "name": "Communications",
            "short": "384",
            "query": "384*",
            "count": 6797
          },
          {
            "name": "Railroad transportation",
            "short": "385",
            "query": "385*",
            "count": 8764
          },
          {
            "name": "Inland waterway & ferry transportation",
            "short": "386",
            "query": "386*",
            "count": 1917
          },
          {
            "name": "Water, air, space transportation",
            "short": "387",
            "query": "387*",
            "count": 8017
          },
          {
            "name": "Transportation",
            "short": "388",
            "query": "388*",
            "count": 9768
          },
          {
            "name": "Metrology & standardization",
            "short": "389",
            "query": "389*",
            "count": 824
          }
        ],
        "count": 64132
      },
      {
        "name": "Customs, etiquette, & folklore",
        "short": "39X",
        "query": "39*",
        "children": [
          {
            "name": "Customs, etiquette, folklore",
            "short": "390",
            "query": "390*",
            "count": 1194
          },
          {
            "name": "Costume & personal appearance",
            "short": "391",
            "query": "391*",
            "count": 3622
          },
          {
            "name": "Customs of life cycle & domestic life",
            "short": "392",
            "query": "392*",
            "count": 1615
          },
          {
            "name": "Death customs",
            "short": "393",
            "query": "393*",
            "count": 643
          },
          {
            "name": "General customs",
            "short": "394",
            "query": "394*",
            "count": 5637
          },
          {
            "name": "Etiquette (Manners)",
            "short": "395",
            "query": "395*",
            "count": 1668
          },
          {
            "name": "No longer used—formerly Women's position and treatment",
            "short": "396",
            "query": "396*",
            "count": 453
          },
          {
            "name": "No longer used—formerly outcast studies",
            "short": "397",
            "query": "397*",
            "count": 30
          },
          {
            "name": "Folklore",
            "short": "398",
            "query": "398*",
            "count": 22540
          },
          {
            "name": "Customs of war & diplomacy",
            "short": "399",
            "query": "399*",
            "count": 58
          }
        ],
        "count": 37371
      }
    ],
    "count": 1311109
  },
  {
    "name": "Language",
    "short": "4XX",
    "query": "4*",
    "children": [
      {
        "name": "Language",
        "short": "40X",
        "query": "40*",
        "children": [
          {
            "name": "Language",
            "short": "400",
            "query": "400*",
            "count": 592
          },
          {
            "name": "Philosophy & theory; international languages",
            "short": "401",
            "query": "401*",
            "count": 4472
          },
          {
            "name": "Miscellany",
            "short": "402",
            "query": "402*",
            "count": 52
          },
          {
            "name": "Dictionaries, encyclopedias, concordances",
            "short": "403",
            "query": "403*",
            "count": 33
          },
          {
            "name": "Special topics of language",
            "short": "404",
            "query": "404*",
            "count": 290
          },
          {
            "name": "Serial publications",
            "short": "405",
            "query": "405*",
            "count": 29
          },
          {
            "name": "Organizations & management",
            "short": "406",
            "query": "406*",
            "count": 40
          },
          {
            "name": "Education, research, related topics",
            "short": "407",
            "query": "407*",
            "count": 794
          },
          {
            "name": "Groups of people",
            "short": "408",
            "query": "408*",
            "count": 254
          },
          {
            "name": "Geographic treatment & biography",
            "short": "409",
            "query": "409*",
            "count": 610
          }
        ],
        "count": 7137
      },
      {
        "name": "Linguistics",
        "short": "41X",
        "query": "41*",
        "children": [
          {
            "name": "Linguistics",
            "short": "410",
            "query": "410*",
            "count": 3383
          },
          {
            "name": "Writing systems of standard forms of languages",
            "short": "411",
            "query": "411*",
            "count": 373
          },
          {
            "name": "Etymology of standard forms of languages",
            "short": "412",
            "query": "412*",
            "count": 332
          },
          {
            "name": "Dictionaries of standard forms of languages",
            "short": "413",
            "query": "413*",
            "count": 571
          },
          {
            "name": "Phonology & phonetics of standard forms of languages",
            "short": "414",
            "query": "414*",
            "count": 724
          },
          {
            "name": "Grammar of standard forms of languages",
            "short": "415",
            "query": "415*",
            "count": 2702
          },
          {
            "name": "No longer used—formerly Prosody",
            "short": "416",
            "query": "416*",
            "count": 15
          },
          {
            "name": "Dialectology & historical linguistics",
            "short": "417",
            "query": "417*",
            "count": 527
          },
          {
            "name": "Standard usage (Prescriptive linguistics)",
            "short": "418",
            "query": "418*",
            "count": 3580
          },
          {
            "name": "Sign languages",
            "short": "419",
            "query": "419*",
            "count": 485
          }
        ],
        "count": 12629
      },
      {
        "name": "English & Old English languages",
        "short": "42X",
        "query": "42*",
        "children": [
          {
            "name": "English & Old English (Anglo-Saxon)",
            "short": "420",
            "query": "420*",
            "count": 1702
          },
          {
            "name": "Writing system, phonology, phonetics of standard English",
            "short": "421",
            "query": "421*",
            "count": 1084
          },
          {
            "name": "Etymology of standard English",
            "short": "422",
            "query": "422*",
            "count": 673
          },
          {
            "name": "Dictionaries of standard English",
            "short": "423",
            "query": "423*",
            "count": 3635
          },
          {
            "name": "No longer used—formerly English thesauruses",
            "short": "424",
            "query": "424*",
            "count": 55
          },
          {
            "name": "Grammar of standard English",
            "short": "425",
            "query": "425*",
            "count": 1270
          },
          {
            "name": "No longer used—formerly English prosodies",
            "short": "426",
            "query": "426*",
            "count": 121
          },
          {
            "name": "Historical & geographical variations, modern nongeographic variations of English",
            "short": "427",
            "query": "427*",
            "count": 1798
          },
          {
            "name": "Standard English usage (Prescriptive linguistics)",
            "short": "428",
            "query": "428*",
            "count": 19827
          },
          {
            "name": "Old English (Anglo-Saxon)",
            "short": "429",
            "query": "429*",
            "count": 277
          }
        ],
        "count": 30202
      },
      {
        "name": "German & related languages",
        "short": "43X",
        "query": "43*",
        "children": [
          {
            "name": "German and related languages",
            "short": "430",
            "query": "430*",
            "count": 778
          },
          {
            "name": "Writing systems, phonology, phonetics of standard German",
            "short": "431",
            "query": "431*",
            "count": 230
          },
          {
            "name": "Etymology of standard German",
            "short": "432",
            "query": "432*",
            "count": 184
          },
          {
            "name": "Dictionaries of standard German",
            "short": "433",
            "query": "433*",
            "count": 625
          },
          {
            "name": "Not assigned or no longer used",
            "short": "434",
            "query": "434*",
            "count": 4
          },
          {
            "name": "Grammar of standard German",
            "short": "435",
            "query": "435*",
            "count": 718
          },
          {
            "name": "Not assigned or no longer used",
            "short": "436",
            "query": "436*",
            "count": 15
          },
          {
            "name": "Historical & geographic variations, modern nongeographic variations of German",
            "short": "437",
            "query": "437*",
            "count": 909
          },
          {
            "name": "Standard German usage (Prescriptive linguistics)",
            "short": "438",
            "query": "438*",
            "count": 1961
          },
          {
            "name": "Other Germanic languages",
            "short": "439",
            "query": "439*",
            "count": 1192
          }
        ],
        "count": 6568
      },
      {
        "name": "French & related languages",
        "short": "44X",
        "query": "44*",
        "children": [
          {
            "name": "French & related Romance languages",
            "short": "440",
            "query": "440*",
            "count": 1368
          },
          {
            "name": "Writing systems, phonology, phonetics of standard French",
            "short": "441",
            "query": "441*",
            "count": 268
          },
          {
            "name": "Etymology of standard French",
            "short": "442",
            "query": "442*",
            "count": 188
          },
          {
            "name": "Dictionaries of standard French",
            "short": "443",
            "query": "443*",
            "count": 1007
          },
          {
            "name": "Not assigned or no longer used",
            "short": "444",
            "query": "444*",
            "count": 5
          },
          {
            "name": "Grammar of standard French",
            "short": "445",
            "query": "445*",
            "count": 803
          },
          {
            "name": "Not assigned or no longer used",
            "short": "446",
            "query": "446*",
            "count": 31
          },
          {
            "name": "Historical and geographic variations, modern nongeographic variations of French",
            "short": "447",
            "query": "447*",
            "count": 1064
          },
          {
            "name": "Standard French usage (Prescriptive linguistics)",
            "short": "448",
            "query": "448*",
            "count": 4222
          },
          {
            "name": "Occitan Catalan, Franco-Provençal",
            "short": "449",
            "query": "449*",
            "count": 460
          }
        ],
        "count": 9340
      },
      {
        "name": "Italian, Romanian, & related languages",
        "short": "45X",
        "query": "45*",
        "children": [
          {
            "name": "Italian, Dalmatian, Romanian, Rhaetian, Sardinian, Corsican",
            "short": "450",
            "query": "450*",
            "count": 234
          },
          {
            "name": "Writing systems, phonology, phonetics of standard Italian",
            "short": "451",
            "query": "451*",
            "count": 44
          },
          {
            "name": "Etymology of standard Italian",
            "short": "452",
            "query": "452*",
            "count": 73
          },
          {
            "name": "Dictionaries of standard Italian",
            "short": "453",
            "query": "453*",
            "count": 380
          },
          {
            "name": "Not assigned or no longer used",
            "short": "454",
            "query": "454*",
            "count": 1
          },
          {
            "name": "Grammar of standard Italian",
            "short": "455",
            "query": "455*",
            "count": 167
          },
          {
            "name": "Not assigned or no longer used",
            "short": "456",
            "query": "456*",
            "count": 6
          },
          {
            "name": "Historical & geographic variations, modern nongeographic variations of Italian",
            "short": "457",
            "query": "457*",
            "count": 643
          },
          {
            "name": "Standard Italian usage (Prescriptive linguistics)",
            "short": "458",
            "query": "458*",
            "count": 779
          },
          {
            "name": "Romanian, Rhaetian, Sardinian, Corsican",
            "short": "459",
            "query": "459*",
            "count": 254
          }
        ],
        "count": 2572
      },
      {
        "name": "Spanish, Portuguese, Galician",
        "short": "46X",
        "query": "46*",
        "children": [
          {
            "name": "Spanish, Portuguese, Galician",
            "short": "460",
            "query": "460*",
            "count": 410
          },
          {
            "name": "Writing systems, phonology, phonetics of standard Spanish",
            "short": "461",
            "query": "461*",
            "count": 139
          },
          {
            "name": "Etymology of standard Spanish",
            "short": "462",
            "query": "462*",
            "count": 104
          },
          {
            "name": "Dictionaries of standard Spanish",
            "short": "463",
            "query": "463*",
            "count": 882
          },
          {
            "name": "Not assigned or no longer used",
            "short": "464",
            "query": "464*",
            "count": 11
          },
          {
            "name": "Grammar of standard Spanish",
            "short": "465",
            "query": "465*",
            "count": 438
          },
          {
            "name": "Not assigned or no longer used",
            "short": "466",
            "query": "466*",
            "count": 13
          },
          {
            "name": "Historical & geographic variations, modern nongeographic variations of Spanish",
            "short": "467",
            "query": "467*",
            "count": 871
          },
          {
            "name": "Standard Spanish usage (Prescriptive linguistics)",
            "short": "468",
            "query": "468*",
            "count": 2864
          },
          {
            "name": "Portuguese",
            "short": "469",
            "query": "469*",
            "count": 1091
          }
        ],
        "count": 6794
      },
      {
        "name": "Latin & Italic languages",
        "short": "47X",
        "query": "47*",
        "children": [
          {
            "name": "Latin & related Italic languages",
            "short": "470",
            "query": "470*",
            "count": 198
          },
          {
            "name": "Writing systems, phonology, phonetics of classical Latin",
            "short": "471",
            "query": "471*",
            "count": 183
          },
          {
            "name": "Etymology of classical Latin",
            "short": "472",
            "query": "472*",
            "count": 54
          },
          {
            "name": "Dictionaries of classical Latin",
            "short": "473",
            "query": "473*",
            "count": 170
          },
          {
            "name": "Not assigned or no longer used",
            "short": "474",
            "query": "474*",
            "count": 9
          },
          {
            "name": "Grammar of classical Latin",
            "short": "475",
            "query": "475*",
            "count": 246
          },
          {
            "name": "Not assigned or no longer used",
            "short": "476",
            "query": "476*",
            "count": 20
          },
          {
            "name": "Old, postclassical, Vulgar Latin",
            "short": "477",
            "query": "477*",
            "count": 111
          },
          {
            "name": "Classical Latin usage (Prescriptive linguistics)",
            "short": "478",
            "query": "478*",
            "count": 544
          },
          {
            "name": "Other Italic languages",
            "short": "479",
            "query": "479*",
            "count": 93
          }
        ],
        "count": 1604
      },
      {
        "name": "Classical & modern Greek languages",
        "short": "48X",
        "query": "48*",
        "children": [
          {
            "name": "Classical Greek & related Hellenic languages",
            "short": "480",
            "query": "480*",
            "count": 350
          },
          {
            "name": "Writing systems, phonology, phonetics of classical Greek",
            "short": "481",
            "query": "481*",
            "count": 212
          },
          {
            "name": "Etymology of classical Greek",
            "short": "482",
            "query": "482*",
            "count": 64
          },
          {
            "name": "Dictionaries of classical Greek",
            "short": "483",
            "query": "483*",
            "count": 50
          },
          {
            "name": "Not assigned or no longer used",
            "short": "484",
            "query": "484*",
            "count": 2
          },
          {
            "name": "Grammar of classical Greek",
            "short": "485",
            "query": "485*",
            "count": 156
          },
          {
            "name": "Not assigned or no longer used",
            "short": "486",
            "query": "486*",
            "count": 25
          },
          {
            "name": "Preclassical & postclassical Greek",
            "short": "487",
            "query": "487*",
            "count": 306
          },
          {
            "name": "Classical Greek usage (Prescriptive linguistics)",
            "short": "488",
            "query": "488*",
            "count": 149
          },
          {
            "name": "Other Hellenic languages",
            "short": "489",
            "query": "489*",
            "count": 268
          }
        ],
        "count": 1562
      },
      {
        "name": "Other languages",
        "short": "49X",
        "query": "49*",
        "children": [
          {
            "name": "Other languages",
            "short": "490",
            "query": "490*",
            "count": 147
          },
          {
            "name": "East Indo-European & Celtic languages",
            "short": "491",
            "query": "491*",
            "count": 6192
          },
          {
            "name": "Afro-Asiatic languages",
            "short": "492",
            "query": "492*",
            "count": 2270
          },
          {
            "name": "Non-Semitic Afro-Asiatic languages",
            "short": "493",
            "query": "493*",
            "count": 739
          },
          {
            "name": "Altic, Uralic, Hyperborean, Dravidian languages, miscellaneous languages of south Asia",
            "short": "494",
            "query": "494*",
            "count": 1387
          },
          {
            "name": "Languages of East & Southeast Asia",
            "short": "495",
            "query": "495*",
            "count": 3786
          },
          {
            "name": "African languages",
            "short": "496",
            "query": "496*",
            "count": 1880
          },
          {
            "name": "North American native languages",
            "short": "497",
            "query": "497*",
            "count": 1683
          },
          {
            "name": "South American native languages",
            "short": "498",
            "query": "498*",
            "count": 718
          },
          {
            "name": "Non-Austronesian languages of Oceania, Austronesian languages, miscellaneous languages",
            "short": "499",
            "query": "499*",
            "count": 2012
          }
        ],
        "count": 20773
      }
    ],
    "count": 98649
  },
  {
    "name": "Science",
    "short": "5XX",
    "query": "5*",
    "children": [
      {
        "name": "Science",
        "short": "50X",
        "query": "50*",
        "children": [
          {
            "name": "Natural sciences & mathematics",
            "short": "500",
            "query": "500*",
            "count": 6049
          },
          {
            "name": "Philosophy & theory",
            "short": "501",
            "query": "501*",
            "count": 2400
          },
          {
            "name": "Miscellany",
            "short": "502",
            "query": "502*",
            "count": 982
          },
          {
            "name": "Dictionaries, encyclopedias, concordances",
            "short": "503",
            "query": "503*",
            "count": 473
          },
          {
            "name": "Not assigned or no longer used",
            "short": "504",
            "query": "504*",
            "count": 155
          },
          {
            "name": "Serial publications",
            "short": "505",
            "query": "505*",
            "count": 84
          },
          {
            "name": "Organizations & management",
            "short": "506",
            "query": "506*",
            "count": 478
          },
          {
            "name": "Education, research, related topics",
            "short": "507",
            "query": "507*",
            "count": 3514
          },
          {
            "name": "Natural history",
            "short": "508",
            "query": "508*",
            "count": 5060
          },
          {
            "name": "History, geographic treatment, biography",
            "short": "509",
            "query": "509*",
            "count": 3057
          }
        ],
        "count": 22021
      },
      {
        "name": "Mathematics",
        "short": "51X",
        "query": "51*",
        "children": [
          {
            "name": "Mathematics",
            "short": "510",
            "query": "510*",
            "count": 13243
          },
          {
            "name": "General principles of mathematics",
            "short": "511",
            "query": "511*",
            "count": 4131
          },
          {
            "name": "Algebra",
            "short": "512",
            "query": "512*",
            "count": 8586
          },
          {
            "name": "Arithmetic",
            "short": "513",
            "query": "513*",
            "count": 3543
          },
          {
            "name": "Topology",
            "short": "514",
            "query": "514*",
            "count": 1741
          },
          {
            "name": "Analysis",
            "short": "515",
            "query": "515*",
            "count": 9382
          },
          {
            "name": "Geometry",
            "short": "516",
            "query": "516*",
            "count": 4094
          },
          {
            "name": "Not assigned or no longer used",
            "short": "517",
            "query": "517*",
            "count": 2119
          },
          {
            "name": "Numerical analysis",
            "short": "518",
            "query": "518*",
            "count": 362
          },
          {
            "name": "Probabilities & applied mathematics",
            "short": "519",
            "query": "519*",
            "count": 10495
          }
        ],
        "count": 53997
      },
      {
        "name": "Astronomy",
        "short": "52X",
        "query": "52*",
        "children": [
          {
            "name": "Astronomy & allied sciences",
            "short": "520",
            "query": "520*",
            "count": 2974
          },
          {
            "name": "Celestial mechanics",
            "short": "521",
            "query": "521*",
            "count": 361
          },
          {
            "name": "Techniques, procedures, apparatus, equipment, materials",
            "short": "522",
            "query": "522*",
            "count": 1390
          },
          {
            "name": "Specific celestial bodies & phenomena",
            "short": "523",
            "query": "523*",
            "count": 8332
          },
          {
            "name": "Not assigned or no longer used",
            "short": "524",
            "query": "524*",
            "count": 4
          },
          {
            "name": "Earth (Astronomical geography)",
            "short": "525",
            "query": "525*",
            "count": 297
          },
          {
            "name": "Mathematical geography",
            "short": "526",
            "query": "526*",
            "count": 2773
          },
          {
            "name": "Celestial navigation",
            "short": "527",
            "query": "527*",
            "count": 176
          },
          {
            "name": "Ephemerides",
            "short": "528",
            "query": "528*",
            "count": 78
          },
          {
            "name": "Chronology",
            "short": "529",
            "query": "529*",
            "count": 831
          }
        ],
        "count": 16901
      },
      {
        "name": "Physics",
        "short": "53X",
        "query": "53*",
        "children": [
          {
            "name": "Physics",
            "short": "530",
            "query": "530*",
            "count": 15332
          },
          {
            "name": "Classical mechanics",
            "short": "531",
            "query": "531*",
            "count": 2985
          },
          {
            "name": "Fluid mechanics",
            "short": "532",
            "query": "532*",
            "count": 1677
          },
          {
            "name": "Pneumatics (Gas mechanics)",
            "short": "533",
            "query": "533*",
            "count": 602
          },
          {
            "name": "Sound & related vibrations",
            "short": "534",
            "query": "534*",
            "count": 594
          },
          {
            "name": "Light & related radiation",
            "short": "535",
            "query": "535*",
            "count": 2988
          },
          {
            "name": "Heat",
            "short": "536",
            "query": "536*",
            "count": 1624
          },
          {
            "name": "Electricity & electronics",
            "short": "537",
            "query": "537*",
            "count": 3535
          },
          {
            "name": "Magnetism",
            "short": "538",
            "query": "538*",
            "count": 1555
          },
          {
            "name": "Modern physics",
            "short": "539",
            "query": "539*",
            "count": 7520
          }
        ],
        "count": 37826
      },
      {
        "name": "Chemistry",
        "short": "54X",
        "query": "54*",
        "children": [
          {
            "name": "Chemistry & allied sciences",
            "short": "540",
            "query": "540*",
            "count": 4147
          },
          {
            "name": "Physical chemistry",
            "short": "541",
            "query": "541*",
            "count": 6621
          },
          {
            "name": "Techniques, procedures, apparatus, equipment, materials",
            "short": "542",
            "query": "542*",
            "count": 533
          },
          {
            "name": "Analytical chemistry",
            "short": "543",
            "query": "543*",
            "count": 2318
          },
          {
            "name": "No longer used—formerly Qualitative analysis",
            "short": "544",
            "query": "544*",
            "count": 597
          },
          {
            "name": "No longer used—formerly Quantitative analysis",
            "short": "545",
            "query": "545*",
            "count": 545
          },
          {
            "name": "Inorganic chemistry",
            "short": "546",
            "query": "546*",
            "count": 2596
          },
          {
            "name": "Organic chemistry",
            "short": "547",
            "query": "547*",
            "count": 6928
          },
          {
            "name": "Crystallography",
            "short": "548",
            "query": "548*",
            "count": 1322
          },
          {
            "name": "Mineralogy",
            "short": "549",
            "query": "549*",
            "count": 1666
          }
        ],
        "count": 26772
      },
      {
        "name": "Earth sciences & geology",
        "short": "55X",
        "query": "55*",
        "children": [
          {
            "name": "Earth sciences",
            "short": "550",
            "query": "550*",
            "count": 3551
          },
          {
            "name": "Geology, hydrology, meteorology",
            "short": "551",
            "query": "551*",
            "count": 30093
          },
          {
            "name": "Petrology",
            "short": "552",
            "query": "552*",
            "count": 2472
          },
          {
            "name": "Economic geology",
            "short": "553",
            "query": "553*",
            "count": 9756
          },
          {
            "name": "Earth sciences of Europe",
            "short": "554",
            "query": "554*",
            "count": 1496
          },
          {
            "name": "Earth sciences of Asia",
            "short": "555",
            "query": "555*",
            "count": 599
          },
          {
            "name": "Earth sciences of Africa",
            "short": "556",
            "query": "556*",
            "count": 493
          },
          {
            "name": "Earth sciences of North America",
            "short": "557",
            "query": "557*",
            "count": 6883
          },
          {
            "name": "Earth sciences of South America",
            "short": "558",
            "query": "558*",
            "count": 235
          },
          {
            "name": "Earth sciences of Australasia, Pacific Ocean islands, Atlantic Ocean islands, Arctic islands, Antarctica, extraterrestrial worlds",
            "short": "559",
            "query": "559*",
            "count": 937
          }
        ],
        "count": 52065
      },
      {
        "name": "Fossils & prehistoric life",
        "short": "56X",
        "query": "56*",
        "children": [
          {
            "name": "Paleontology",
            "short": "560",
            "query": "560*",
            "count": 2249
          },
          {
            "name": "Paleobotany; fossil microorganisms",
            "short": "561",
            "query": "561*",
            "count": 783
          },
          {
            "name": "Fossil invertebrates",
            "short": "562",
            "query": "562*",
            "count": 213
          },
          {
            "name": "Miscellaneous fossil marine & seashore invertebrates",
            "short": "563",
            "query": "563*",
            "count": 722
          },
          {
            "name": "Fossil Mollusca & Molluscoidea",
            "short": "564",
            "query": "564*",
            "count": 811
          },
          {
            "name": "Fossil Arthropoda",
            "short": "565",
            "query": "565*",
            "count": 394
          },
          {
            "name": "Fossil Chordata",
            "short": "566",
            "query": "566*",
            "count": 243
          },
          {
            "name": "Fossil cold-blooded vertebrates",
            "short": "567",
            "query": "567*",
            "count": 1865
          },
          {
            "name": "Fossil Aves (birds)",
            "short": "568",
            "query": "568*",
            "count": 341
          },
          {
            "name": "Fossil Mammalia",
            "short": "569",
            "query": "569*",
            "count": 983
          }
        ],
        "count": 8274
      },
      {
        "name": "Biology",
        "short": "57X",
        "query": "57*",
        "children": [
          {
            "name": "Biology",
            "short": "570",
            "query": "570*",
            "count": 1346
          },
          {
            "name": "Physiology & related subjects",
            "short": "571",
            "query": "571*",
            "count": 1800
          },
          {
            "name": "Biochemistry",
            "short": "572",
            "query": "572*",
            "count": 3743
          },
          {
            "name": "Specific physiological systems in animals, regional histology & physiology in animals",
            "short": "573",
            "query": "573*",
            "count": 2194
          },
          {
            "name": "Not assigned or no longer used",
            "short": "574",
            "query": "574*",
            "count": 18194
          },
          {
            "name": "Specific parts of & physiological systems in plants",
            "short": "575",
            "query": "575*",
            "count": 2543
          },
          {
            "name": "Genetics and evolution",
            "short": "576",
            "query": "576*",
            "count": 2642
          },
          {
            "name": "Ecology",
            "short": "577",
            "query": "577*",
            "count": 2889
          },
          {
            "name": "Natural history of organisms & related subjects",
            "short": "578",
            "query": "578*",
            "count": 1067
          },
          {
            "name": "Natural history of microorganisms, fungi, algae",
            "short": "579",
            "query": "579*",
            "count": 1003
          }
        ],
        "count": 36892
      },
      {
        "name": "Plants",
        "short": "58X",
        "query": "58*",
        "children": [
          {
            "name": "Plants",
            "short": "580",
            "query": "580*",
            "count": 1188
          },
          {
            "name": "Specific topics in natural history of plants",
            "short": "581",
            "query": "581*",
            "count": 8464
          },
          {
            "name": "Plants noted for specific vegetative characteristics and flowers",
            "short": "582",
            "query": "582*",
            "count": 3801
          },
          {
            "name": "Magnoliopsida (Dicotyledones)",
            "short": "583",
            "query": "583*",
            "count": 1686
          },
          {
            "name": "Liliopsida (Monocotyledones)",
            "short": "584",
            "query": "584*",
            "count": 1024
          },
          {
            "name": "Pinophyta (Gymnosperms)",
            "short": "585",
            "query": "585*",
            "count": 225
          },
          {
            "name": "Cryptogamia (Seedless plants)",
            "short": "586",
            "query": "586*",
            "count": 112
          },
          {
            "name": "Pteridophyta",
            "short": "587",
            "query": "587*",
            "count": 290
          },
          {
            "name": "Bryophyta",
            "short": "588",
            "query": "588*",
            "count": 281
          },
          {
            "name": "No longer used—formerly Forestry",
            "short": "589",
            "query": "589*",
            "count": 2983
          }
        ],
        "count": 19510
      },
      {
        "name": "Animals (Zoology)",
        "short": "59X",
        "query": "59*",
        "children": [
          {
            "name": "Animals",
            "short": "590",
            "query": "590*",
            "count": 1818
          },
          {
            "name": "Specific topics in natural history of animals",
            "short": "591",
            "query": "591*",
            "count": 11050
          },
          {
            "name": "Invertebrates",
            "short": "592",
            "query": "592*",
            "count": 741
          },
          {
            "name": "Miscellaneous marine & seashore invertebrates",
            "short": "593",
            "query": "593*",
            "count": 836
          },
          {
            "name": "Mollusca & Molluscoidea",
            "short": "594",
            "query": "594*",
            "count": 1351
          },
          {
            "name": "Arthropoda",
            "short": "595",
            "query": "595*",
            "count": 9839
          },
          {
            "name": "Chordata",
            "short": "596",
            "query": "596*",
            "count": 1391
          },
          {
            "name": "Cold-blooded vertebrates",
            "short": "597",
            "query": "597*",
            "count": 6624
          },
          {
            "name": "Aves (Birds)",
            "short": "598",
            "query": "598*",
            "count": 9615
          },
          {
            "name": "Mammalia (Mammals)",
            "short": "599",
            "query": "599*",
            "count": 14449
          }
        ],
        "count": 56180
      }
    ],
    "count": 324271
  },
  {
    "name": "Technology",
    "short": "6XX",
    "query": "6*",
    "children": [
      {
        "name": "Technology",
        "short": "60X",
        "query": "60*",
        "children": [
          {
            "name": "Technology (Applied sciences)",
            "short": "600",
            "query": "600*",
            "count": 784
          },
          {
            "name": "Philosophy & theory",
            "short": "601",
            "query": "601*",
            "count": 343
          },
          {
            "name": "Miscellany",
            "short": "602",
            "query": "602*",
            "count": 984
          },
          {
            "name": "Dictionaries, encyclopedias, concordances",
            "short": "603",
            "query": "603*",
            "count": 310
          },
          {
            "name": "Technical drawing, hazardous materials technology; groups of people",
            "short": "604",
            "query": "604*",
            "count": 1106
          },
          {
            "name": "Serial publications",
            "short": "605",
            "query": "605*",
            "count": 24
          },
          {
            "name": "Organizations",
            "short": "606",
            "query": "606*",
            "count": 139
          },
          {
            "name": "Education, research, related topics",
            "short": "607",
            "query": "607*",
            "count": 1879
          },
          {
            "name": "Patents",
            "short": "608",
            "query": "608*",
            "count": 749
          },
          {
            "name": "History, geographic treatment, biography",
            "short": "609",
            "query": "609*",
            "count": 1349
          }
        ],
        "count": 7635
      },
      {
        "name": "Medicine & health",
        "short": "61X",
        "query": "61*",
        "children": [
          {
            "name": "Medicine & health",
            "short": "610",
            "query": "610*",
            "count": 22203
          },
          {
            "name": "Human anatomy, cytology, histology",
            "short": "611",
            "query": "611*",
            "count": 3028
          },
          {
            "name": "Human physiology",
            "short": "612",
            "query": "612*",
            "count": 16832
          },
          {
            "name": "Personal health & safety",
            "short": "613",
            "query": "613*",
            "count": 21464
          },
          {
            "name": "Forensic medicine; incidence of injuries, wounds, disease; public preventive medicine",
            "short": "614",
            "query": "614*",
            "count": 11302
          },
          {
            "name": "Pharmacology and therapeutics",
            "short": "615",
            "query": "615*",
            "count": 22837
          },
          {
            "name": "Diseases",
            "short": "616",
            "query": "616*",
            "count": 81373
          },
          {
            "name": "Surgery, regional medicine, dentistry, ophthalmology, otology, audiology",
            "short": "617",
            "query": "617*",
            "count": 23072
          },
          {
            "name": "Gynecology, obstetrics, pediatrics, geriatrics",
            "short": "618",
            "query": "618*",
            "count": 17803
          },
          {
            "name": "No longer used—formerly Experimental medicine",
            "short": "619",
            "query": "619*",
            "count": 340
          }
        ],
        "count": 217997
      },
      {
        "name": "Engineering",
        "short": "62X",
        "query": "62*",
        "children": [
          {
            "name": "Engineering & Applied operations",
            "short": "620",
            "query": "620*",
            "count": 24739
          },
          {
            "name": "Applied physics",
            "short": "621",
            "query": "621*",
            "count": 54160
          },
          {
            "name": "Mining & related operations",
            "short": "622",
            "query": "622*",
            "count": 7363
          },
          {
            "name": "Military & nautical engineering",
            "short": "623",
            "query": "623*",
            "count": 11962
          },
          {
            "name": "Civil engineering",
            "short": "624",
            "query": "624*",
            "count": 10539
          },
          {
            "name": "Engineering of railroads, roads",
            "short": "625",
            "query": "625*",
            "count": 6890
          },
          {
            "name": "Not assigned or no longer used",
            "short": "626",
            "query": "626*",
            "count": 64
          },
          {
            "name": "Hydraulic engineering",
            "short": "627",
            "query": "627*",
            "count": 3616
          },
          {
            "name": "Sanitary engineering",
            "short": "628",
            "query": "628*",
            "count": 11899
          },
          {
            "name": "Other branches of engineering",
            "short": "629",
            "query": "629*",
            "count": 36140
          }
        ],
        "count": 166203
      },
      {
        "name": "Agriculture",
        "short": "63X",
        "query": "63*",
        "children": [
          {
            "name": "Agriculture & related technologies",
            "short": "630",
            "query": "630*",
            "count": 8049
          },
          {
            "name": "Specific techniques; apparatus, equipment, materials",
            "short": "631",
            "query": "631*",
            "count": 9191
          },
          {
            "name": "Plant injuries, diseases, pests",
            "short": "632",
            "query": "632*",
            "count": 3026
          },
          {
            "name": "Field & plantation crops",
            "short": "633",
            "query": "633*",
            "count": 3657
          },
          {
            "name": "Orchards, fruits, forestry",
            "short": "634",
            "query": "634*",
            "count": 7094
          },
          {
            "name": "Garden crops (Horticulture)",
            "short": "635",
            "query": "635*",
            "count": 12107
          },
          {
            "name": "Animal husbandry",
            "short": "636",
            "query": "636*",
            "count": 20956
          },
          {
            "name": "Processing dairy & related products",
            "short": "637",
            "query": "637*",
            "count": 896
          },
          {
            "name": "Insect culture",
            "short": "638",
            "query": "638*",
            "count": 638
          },
          {
            "name": "Hunting, fishing, conservation, related technologies",
            "short": "639",
            "query": "639*",
            "count": 6949
          }
        ],
        "count": 71956
      },
      {
        "name": "Home & family management",
        "short": "64X",
        "query": "64*",
        "children": [
          {
            "name": "Home & family management",
            "short": "640",
            "query": "640*",
            "count": 2631
          },
          {
            "name": "Food & drink",
            "short": "641",
            "query": "641*",
            "count": 49574
          },
          {
            "name": "Meals & table service",
            "short": "642",
            "query": "642*",
            "count": 1329
          },
          {
            "name": "Housing & household equipment",
            "short": "643",
            "query": "643*",
            "count": 2624
          },
          {
            "name": "Household utilities",
            "short": "644",
            "query": "644*",
            "count": 209
          },
          {
            "name": "Household furnishings",
            "short": "645",
            "query": "645*",
            "count": 364
          },
          {
            "name": "Sewing, clothing, management of personal and family life",
            "short": "646",
            "query": "646*",
            "count": 7386
          },
          {
            "name": "Management of public households (Institutional housekeeping)",
            "short": "647",
            "query": "647*",
            "count": 4708
          },
          {
            "name": "Housekeeping",
            "short": "648",
            "query": "648*",
            "count": 623
          },
          {
            "name": "Child rearing; home care of people with disabilities & illnesses",
            "short": "649",
            "query": "649*",
            "count": 6996
          }
        ],
        "count": 76309
      },
      {
        "name": "Management & public relations",
        "short": "65X",
        "query": "65*",
        "children": [
          {
            "name": "Management & auxiliary services",
            "short": "650",
            "query": "650*",
            "count": 8917
          },
          {
            "name": "Office services",
            "short": "651",
            "query": "651*",
            "count": 4297
          },
          {
            "name": "Processes of written communication",
            "short": "652",
            "query": "652*",
            "count": 3062
          },
          {
            "name": "Shorthand",
            "short": "653",
            "query": "653*",
            "count": 529
          },
          {
            "name": "656 Not assigned or no longer used",
            "short": "654–656",
            "query": "[654 TO 656]",
            "count": 1911
          },
          {
            "name": "Accounting",
            "short": "657",
            "query": "657*",
            "count": 8740
          },
          {
            "name": "General management",
            "short": "658",
            "query": "658*",
            "count": 74330
          },
          {
            "name": "Advertising & public relations",
            "short": "659",
            "query": "659*",
            "count": 4978
          }
        ],
        "count": 106407
      },
      {
        "name": "Chemical engineering",
        "short": "66X",
        "query": "66*",
        "children": [
          {
            "name": "Chemical engineering & related technologies",
            "short": "660",
            "query": "660*",
            "count": 5320
          },
          {
            "name": "Technology of industrial chemicals",
            "short": "661",
            "query": "661*",
            "count": 816
          },
          {
            "name": "Technology of explosives, fuels, related products",
            "short": "662",
            "query": "662*",
            "count": 1625
          },
          {
            "name": "Beverage technology",
            "short": "663",
            "query": "663*",
            "count": 1083
          },
          {
            "name": "Food technology",
            "short": "664",
            "query": "664*",
            "count": 4192
          },
          {
            "name": "Technology of industrial oils, fats, waxes, gases",
            "short": "665",
            "query": "665*",
            "count": 2181
          },
          {
            "name": "Ceramic & allied technologies",
            "short": "666",
            "query": "666*",
            "count": 1815
          },
          {
            "name": "Cleaning, color, coating, related technologies",
            "short": "667",
            "query": "667*",
            "count": 1286
          },
          {
            "name": "Technology of other organic products",
            "short": "668",
            "query": "668*",
            "count": 3258
          },
          {
            "name": "Metallurgy",
            "short": "669",
            "query": "669*",
            "count": 3745
          }
        ],
        "count": 25269
      },
      {
        "name": "Manufacturing",
        "short": "67X",
        "query": "67*",
        "children": [
          {
            "name": "Manufacturing",
            "short": "670",
            "query": "670*",
            "count": 2790
          },
          {
            "name": "Metalworking processes & primary metal products",
            "short": "671",
            "query": "671*",
            "count": 3090
          },
          {
            "name": "Iron, steel, other iron alloys",
            "short": "672",
            "query": "672*",
            "count": 803
          },
          {
            "name": "Nonferrous metals",
            "short": "673",
            "query": "673*",
            "count": 395
          },
          {
            "name": "Lumber processing, wood products, cork",
            "short": "674",
            "query": "674*",
            "count": 851
          },
          {
            "name": "Leather & fur processing",
            "short": "675",
            "query": "675*",
            "count": 157
          },
          {
            "name": "Pulp & paper technology",
            "short": "676",
            "query": "676*",
            "count": 1440
          },
          {
            "name": "Textiles",
            "short": "677",
            "query": "677*",
            "count": 2436
          },
          {
            "name": "Elastomers & elastomer products",
            "short": "678",
            "query": "678*",
            "count": 464
          },
          {
            "name": "Other products of specific kinds of materials",
            "short": "679",
            "query": "679*",
            "count": 112
          }
        ],
        "count": 12502
      },
      {
        "name": "Manufacture for specific uses",
        "short": "68X",
        "query": "68*",
        "children": [
          {
            "name": "Manufacture of products for specific uses",
            "short": "680",
            "query": "680*",
            "count": 362
          },
          {
            "name": "Precision instruments[disambiguation needed] & other devices",
            "short": "681",
            "query": "681*",
            "count": 3482
          },
          {
            "name": "Small forge work (Blacksmithing)",
            "short": "682",
            "query": "682*",
            "count": 136
          },
          {
            "name": "Hardware & household appliances",
            "short": "683",
            "query": "683*",
            "count": 1539
          },
          {
            "name": "Furnishings & home workshops",
            "short": "684",
            "query": "684*",
            "count": 2599
          },
          {
            "name": "Leather & fur goods, & related products",
            "short": "685",
            "query": "685*",
            "count": 347
          },
          {
            "name": "Printing & related activities",
            "short": "686",
            "query": "686*",
            "count": 5679
          },
          {
            "name": "Clothing & accessories",
            "short": "687",
            "query": "687*",
            "count": 692
          },
          {
            "name": "Other final products, & packaging technology",
            "short": "688",
            "query": "688*",
            "count": 2130
          },
          {
            "name": "Not assigned or no longer used",
            "short": "689",
            "query": "689*",
            "count": 5
          }
        ],
        "count": 16949
      },
      {
        "name": "Construction of buildings",
        "short": "69X",
        "query": "69*",
        "children": [
          {
            "name": "Construction of buildings",
            "short": "690",
            "query": "690*",
            "count": 4252
          },
          {
            "name": "Building materials",
            "short": "691",
            "query": "691*",
            "count": 750
          },
          {
            "name": "Auxiliary construction practices",
            "short": "692",
            "query": "692*",
            "count": 951
          },
          {
            "name": "Construction in specific types of materials & for specific purposes",
            "short": "693",
            "query": "693*",
            "count": 1819
          },
          {
            "name": "Wood construction",
            "short": "694",
            "query": "694*",
            "count": 729
          },
          {
            "name": "Roof covering",
            "short": "695",
            "query": "695*",
            "count": 201
          },
          {
            "name": "Utilities",
            "short": "696",
            "query": "696*",
            "count": 1023
          },
          {
            "name": "Heating, ventilating, air-conditioning engineering",
            "short": "697",
            "query": "697*",
            "count": 1730
          },
          {
            "name": "Detail finishing",
            "short": "698",
            "query": "698*",
            "count": 424
          },
          {
            "name": "Not assigned or no longer used",
            "short": "699",
            "query": "699*",
            "count": 24
          }
        ],
        "count": 11769
      }
    ],
    "count": 709586
  },
  {
    "name": "Arts & recreation",
    "short": "7XX",
    "query": "7*",
    "children": [
      {
        "name": "Arts",
        "short": "70X",
        "query": "70*",
        "children": [
          {
            "name": "The Arts",
            "short": "700",
            "query": "700*",
            "count": 8064
          },
          {
            "name": "Philosophy & theory of fine & decorative arts",
            "short": "701",
            "query": "701*",
            "count": 2762
          },
          {
            "name": "Miscellany of fine & decorative arts",
            "short": "702",
            "query": "702*",
            "count": 781
          },
          {
            "name": "Dictionaries, encyclopedias, concordances of fine & decorative arts",
            "short": "703",
            "query": "703*",
            "count": 196
          },
          {
            "name": "Special topics in fine & decorative arts",
            "short": "704",
            "query": "704*",
            "count": 4805
          },
          {
            "name": "Serial publications of fine & decorative arts",
            "short": "705",
            "query": "705*",
            "count": 53
          },
          {
            "name": "Organizations & management of fine & decorative arts",
            "short": "706",
            "query": "706*",
            "count": 336
          },
          {
            "name": "Education, research, related topics of fine & decorative arts",
            "short": "707",
            "query": "707*",
            "count": 1620
          },
          {
            "name": "Galleries, museums, private collections of fine & decorative arts",
            "short": "708",
            "query": "708*",
            "count": 2982
          },
          {
            "name": "History, geographic treatment, biography",
            "short": "709",
            "query": "709*",
            "count": 26675
          }
        ],
        "count": 47733
      },
      {
        "name": "Area planning & landscape architecture",
        "short": "71X",
        "query": "71*",
        "children": [
          {
            "name": "Area planning & landscape architecture",
            "short": "710",
            "query": "710*",
            "count": 131
          },
          {
            "name": "Area planning (Civic art)",
            "short": "711",
            "query": "711*",
            "count": 6266
          },
          {
            "name": "Landscape architecture (Landscape design)",
            "short": "712",
            "query": "712*",
            "count": 3214
          },
          {
            "name": "Landscape architecture of trafficways",
            "short": "713",
            "query": "713*",
            "count": 54
          },
          {
            "name": "Water features in landscape architecture",
            "short": "714",
            "query": "714*",
            "count": 133
          },
          {
            "name": "Woody plants in landscape architecture",
            "short": "715",
            "query": "715*",
            "count": 125
          },
          {
            "name": "Herbaceous plants in landscape architecture",
            "short": "716",
            "query": "716*",
            "count": 95
          },
          {
            "name": "Structures in landscape architecture",
            "short": "717",
            "query": "717*",
            "count": 230
          },
          {
            "name": "Landscape design of cemeteries",
            "short": "718",
            "query": "718*",
            "count": 29
          },
          {
            "name": "Natural landscapes",
            "short": "719",
            "query": "719*",
            "count": 311
          }
        ],
        "count": 10559
      },
      {
        "name": "Architecture",
        "short": "72X",
        "query": "72*",
        "children": [
          {
            "name": "Architecture",
            "short": "720",
            "query": "720*",
            "count": 13952
          },
          {
            "name": "Architectural materials & structural elements",
            "short": "721",
            "query": "721*",
            "count": 1178
          },
          {
            "name": "Architecture from earliest times to ca. 300",
            "short": "722",
            "query": "722*",
            "count": 603
          },
          {
            "name": "Architecture from ca. 300 to 1399",
            "short": "723",
            "query": "723*",
            "count": 202
          },
          {
            "name": "Architecture from 1400",
            "short": "724",
            "query": "724*",
            "count": 882
          },
          {
            "name": "Public structures",
            "short": "725",
            "query": "725*",
            "count": 3209
          },
          {
            "name": "Buildings for religious & related purposes",
            "short": "726",
            "query": "726*",
            "count": 4260
          },
          {
            "name": "Buildings for educational & research purposes",
            "short": "727",
            "query": "727*",
            "count": 951
          },
          {
            "name": "Residential & related buildings",
            "short": "728",
            "query": "728*",
            "count": 5737
          },
          {
            "name": "Design & decoration of structures & accessories",
            "short": "729",
            "query": "729*",
            "count": 1414
          }
        ],
        "count": 32107
      },
      {
        "name": "Sculpture, ceramics, & metalwork",
        "short": "73X",
        "query": "73*",
        "children": [
          {
            "name": "Sculpture & related arts",
            "short": "730",
            "query": "730*",
            "count": 7807
          },
          {
            "name": "Processes, forms, subjects of sculpture",
            "short": "731",
            "query": "731*",
            "count": 1050
          },
          {
            "name": "Sculpture from earliest times to ca. 500, sculpture of non-literate peoples",
            "short": "732",
            "query": "732*",
            "count": 948
          },
          {
            "name": "Greek, Etruscan, Roman sculpture",
            "short": "733",
            "query": "733*",
            "count": 694
          },
          {
            "name": "Sculpture from ca. 500 to 1399",
            "short": "734",
            "query": "734*",
            "count": 156
          },
          {
            "name": "Sculpture from 1400",
            "short": "735",
            "query": "735*",
            "count": 550
          },
          {
            "name": "Carving & carvings",
            "short": "736",
            "query": "736*",
            "count": 1800
          },
          {
            "name": "Numismatics & sigillography",
            "short": "737",
            "query": "737*",
            "count": 3396
          },
          {
            "name": "Ceramic arts",
            "short": "738",
            "query": "738*",
            "count": 6591
          },
          {
            "name": "Art metalwork",
            "short": "739",
            "query": "739*",
            "count": 4447
          }
        ],
        "count": 27289
      },
      {
        "name": "Graphic arts & decorative arts",
        "short": "74X",
        "query": "74*",
        "children": [
          {
            "name": "Graphic arts",
            "short": "740",
            "query": "740*",
            "count": 238
          },
          {
            "name": "Drawing & drawings",
            "short": "741",
            "query": "741*",
            "count": 33260
          },
          {
            "name": "Perspective in drawing",
            "short": "742",
            "query": "742*",
            "count": 160
          },
          {
            "name": "Drawing & drawings by subject",
            "short": "743",
            "query": "743*",
            "count": 1468
          },
          {
            "name": "Not assigned or no longer used",
            "short": "744",
            "query": "744*",
            "count": 353
          },
          {
            "name": "Decorative arts",
            "short": "745",
            "query": "745*",
            "count": 17042
          },
          {
            "name": "Textile arts",
            "short": "746",
            "query": "746*",
            "count": 14138
          },
          {
            "name": "Interior decoration",
            "short": "747",
            "query": "747*",
            "count": 3168
          },
          {
            "name": "Glass",
            "short": "748",
            "query": "748*",
            "count": 2478
          },
          {
            "name": "Furniture & accessories",
            "short": "749",
            "query": "749*",
            "count": 2958
          }
        ],
        "count": 75083
      },
      {
        "name": "Painting",
        "short": "75X",
        "query": "75*",
        "children": [
          {
            "name": "Painting & paintings",
            "short": "750",
            "query": "750*",
            "count": 1512
          },
          {
            "name": "Techniques, procedures, apparatus, equipment, materials, forms",
            "short": "751",
            "query": "751*",
            "count": 3187
          },
          {
            "name": "Color",
            "short": "752",
            "query": "752*",
            "count": 171
          },
          {
            "name": "Symbolism, allegory, mythology, legend",
            "short": "753",
            "query": "753*",
            "count": 49
          },
          {
            "name": "Genre paintings",
            "short": "754",
            "query": "754*",
            "count": 88
          },
          {
            "name": "Religion",
            "short": "755",
            "query": "755*",
            "count": 589
          },
          {
            "name": "Not assigned or no longer used",
            "short": "756",
            "query": "756*",
            "count": 33
          },
          {
            "name": "Human figures",
            "short": "757",
            "query": "757*",
            "count": 723
          },
          {
            "name": "Nature, architectural subjects & cityscapes, other specific subjects",
            "short": "758",
            "query": "758*",
            "count": 1389
          },
          {
            "name": "History, geographic treatment, biography",
            "short": "759",
            "query": "759*",
            "count": 35287
          }
        ],
        "count": 42853
      },
      {
        "name": "Printmaking & prints",
        "short": "76X",
        "query": "76*",
        "children": [
          {
            "name": "Printmaking & prints",
            "short": "760",
            "query": "760*",
            "count": 4834
          },
          {
            "name": "Relief processes (Block printing)",
            "short": "761",
            "query": "761*",
            "count": 388
          },
          {
            "name": "Not assigned or no longer used",
            "short": "762",
            "query": "762*",
            "count": 8
          },
          {
            "name": "Lithographic processes (Planographic processes)",
            "short": "763",
            "query": "763*",
            "count": 134
          },
          {
            "name": "Chromolithography & serigraphy",
            "short": "764",
            "query": "764*",
            "count": 65
          },
          {
            "name": "Metal engraving",
            "short": "765",
            "query": "765*",
            "count": 59
          },
          {
            "name": "Mezzotinting, aquatinting, & related processes",
            "short": "766",
            "query": "766*",
            "count": 13
          },
          {
            "name": "Etching & drypoint",
            "short": "767",
            "query": "767*",
            "count": 121
          },
          {
            "name": "Not assigned or no longer used",
            "short": "768",
            "query": "768*",
            "count": 4
          },
          {
            "name": "Prints",
            "short": "769",
            "query": "769*",
            "count": 9065
          }
        ],
        "count": 14525
      },
      {
        "name": "Photography, computer art, film, video",
        "short": "77X",
        "query": "77*",
        "children": [
          {
            "name": "Photography, computer art, cinematography, videography",
            "short": "770",
            "query": "770*",
            "count": 4521
          },
          {
            "name": "Techniques, procedures, apparatus, equipment, materials",
            "short": "771",
            "query": "771*",
            "count": 1418
          },
          {
            "name": "Metallic salt processes",
            "short": "772",
            "query": "772*",
            "count": 82
          },
          {
            "name": "Pigment processes of printing",
            "short": "773",
            "query": "773*",
            "count": 20
          },
          {
            "name": "No longer used—formerly Holography",
            "short": "774",
            "query": "774*",
            "count": 57
          },
          {
            "name": "No longer used—formerly Digital photography",
            "short": "775",
            "query": "775*",
            "count": 302
          },
          {
            "name": "Computer art (Digital art)",
            "short": "776",
            "query": "776*",
            "count": 65
          },
          {
            "name": "Cinematography & Videography",
            "short": "777",
            "query": "777*",
            "count": 107
          },
          {
            "name": "Specific fields & special kinds of photography",
            "short": "778",
            "query": "778*",
            "count": 4161
          },
          {
            "name": "Photographic images",
            "short": "779",
            "query": "779*",
            "count": 9951
          }
        ],
        "count": 20442
      },
      {
        "name": "Music",
        "short": "78X",
        "query": "78*",
        "children": [
          {
            "name": "Music",
            "short": "780",
            "query": "780*",
            "count": 18454
          },
          {
            "name": "General principles & musical forms",
            "short": "781",
            "query": "781*",
            "count": 11345
          },
          {
            "name": "Vocal music",
            "short": "782",
            "query": "782*",
            "count": 18173
          },
          {
            "name": "Music for single voices",
            "short": "783",
            "query": "783*",
            "count": 1924
          },
          {
            "name": "Instruments & Instrumental ensembles & their music",
            "short": "784",
            "query": "784*",
            "count": 7101
          },
          {
            "name": "Ensembles with only one instrument per part",
            "short": "785",
            "query": "785*",
            "count": 2529
          },
          {
            "name": "Keyboard, mechanical, electrophonic, percussion instruments",
            "short": "786",
            "query": "786*",
            "count": 4055
          },
          {
            "name": "Stringed instruments (Chordophones)",
            "short": "787",
            "query": "787*",
            "count": 2626
          },
          {
            "name": "Wind instruments (Aerophones)",
            "short": "788",
            "query": "788*",
            "count": 1295
          },
          {
            "name": "Unassigned or no longer used",
            "short": "789",
            "query": "789*",
            "count": 908
          }
        ],
        "count": 67166
      },
      {
        "name": "Outline of sports, games & entertainment",
        "short": "79X",
        "query": "79*",
        "children": [
          {
            "name": "Recreational & performing arts",
            "short": "790",
            "query": "790*",
            "count": 3271
          },
          {
            "name": "Public performances",
            "short": "791",
            "query": "791*",
            "count": 37870
          },
          {
            "name": "Stage presentations",
            "short": "792",
            "query": "792*",
            "count": 17872
          },
          {
            "name": "Indoor games & amusements",
            "short": "793",
            "query": "793*",
            "count": 8514
          },
          {
            "name": "Indoor games of skill",
            "short": "794",
            "query": "794*",
            "count": 4487
          },
          {
            "name": "Games of chance",
            "short": "795",
            "query": "795*",
            "count": 2225
          },
          {
            "name": "Athletic & outdoor sports & games",
            "short": "796",
            "query": "796*",
            "count": 44784
          },
          {
            "name": "Aquatic & air sports",
            "short": "797",
            "query": "797*",
            "count": 4635
          },
          {
            "name": "Equestrian sports & animal racing",
            "short": "798",
            "query": "798*",
            "count": 2447
          },
          {
            "name": "Fishing, hunting, shooting",
            "short": "799",
            "query": "799*",
            "count": 7048
          }
        ],
        "count": 132669
      }
    ],
    "count": 467390
  },
  {
    "name": "Literature",
    "short": "8XX",
    "query": "8*",
    "children": [
      {
        "name": "Literature, rhetoric & criticism",
        "short": "80X",
        "query": "80*",
        "children": [
          {
            "name": "Literature (Belles-lettres) & rhetoric",
            "short": "800",
            "query": "800*",
            "count": 1376
          },
          {
            "name": "Philosophy & theory",
            "short": "801",
            "query": "801*",
            "count": 3727
          },
          {
            "name": "Miscellany",
            "short": "802",
            "query": "802*",
            "count": 51
          },
          {
            "name": "Dictionaries, encyclopedias, concordances",
            "short": "803",
            "query": "803*",
            "count": 233
          },
          {
            "name": "Not assigned or no longer used",
            "short": "804",
            "query": "804*",
            "count": 236
          },
          {
            "name": "Serial publications",
            "short": "805",
            "query": "805*",
            "count": 43
          },
          {
            "name": "Organizations & management",
            "short": "806",
            "query": "806*",
            "count": 74
          },
          {
            "name": "Education, research, related topics",
            "short": "807",
            "query": "807*",
            "count": 303
          },
          {
            "name": "Rhetoric & collections of literary texts from more than two literatures",
            "short": "808",
            "query": "808*",
            "count": 27804
          },
          {
            "name": "History, description, critical appraisal of more than two literatures",
            "short": "809",
            "query": "809*",
            "count": 15885
          }
        ],
        "count": 49144
      },
      {
        "name": "American literature in English",
        "short": "81X",
        "query": "81*",
        "children": [
          {
            "name": "American literature in English",
            "short": "810",
            "query": "810*",
            "count": 7692
          },
          {
            "name": "American poetry in English",
            "short": "811",
            "query": "811*",
            "count": 57345
          },
          {
            "name": "American drama in English",
            "short": "812",
            "query": "812*",
            "count": 13226
          },
          {
            "name": "American fiction in English",
            "short": "813",
            "query": "813*",
            "count": 169308
          },
          {
            "name": "American essays in English",
            "short": "814",
            "query": "814*",
            "count": 2921
          },
          {
            "name": "American speeches in English",
            "short": "815",
            "query": "815*",
            "count": 295
          },
          {
            "name": "American letters in English",
            "short": "816",
            "query": "816*",
            "count": 206
          },
          {
            "name": "American humor & satire in English",
            "short": "817",
            "query": "817*",
            "count": 1742
          },
          {
            "name": "American miscellaneous writings in English",
            "short": "818",
            "query": "818*",
            "count": 10948
          },
          {
            "name": "No longer used—formerly Puzzle activities",
            "short": "819",
            "query": "819*",
            "count": 268
          }
        ],
        "count": 262817
      },
      {
        "name": "English & Old English literatures",
        "short": "82X",
        "query": "82*",
        "children": [
          {
            "name": "English & Old English (Anglo-Saxon) literatures",
            "short": "820",
            "query": "820*",
            "count": 10075
          },
          {
            "name": "English Poetry",
            "short": "821",
            "query": "821*",
            "count": 39322
          },
          {
            "name": "English drama",
            "short": "822",
            "query": "822*",
            "count": 20888
          },
          {
            "name": "English fiction",
            "short": "823",
            "query": "823*",
            "count": 140287
          },
          {
            "name": "English essays",
            "short": "824",
            "query": "824*",
            "count": 2259
          },
          {
            "name": "English speeches",
            "short": "825",
            "query": "825*",
            "count": 110
          },
          {
            "name": "English letters",
            "short": "826",
            "query": "826*",
            "count": 312
          },
          {
            "name": "English humor & satire",
            "short": "827",
            "query": "827*",
            "count": 1033
          },
          {
            "name": "English miscellaneous writings",
            "short": "828",
            "query": "828*",
            "count": 8543
          },
          {
            "name": "Old English (Anglo-Saxon) literature",
            "short": "829",
            "query": "829*",
            "count": 728
          }
        ],
        "count": 221921
      },
      {
        "name": "German & related literatures",
        "short": "83X",
        "query": "83*",
        "children": [
          {
            "name": "German literature & literatures of related languages",
            "short": "830",
            "query": "830*",
            "count": 4234
          },
          {
            "name": "German poetry",
            "short": "831",
            "query": "831*",
            "count": 6763
          },
          {
            "name": "German drama",
            "short": "832",
            "query": "832*",
            "count": 3580
          },
          {
            "name": "German fiction",
            "short": "833",
            "query": "833*",
            "count": 13150
          },
          {
            "name": "German essays",
            "short": "834",
            "query": "834*",
            "count": 451
          },
          {
            "name": "German speeches",
            "short": "835",
            "query": "835*",
            "count": 49
          },
          {
            "name": "German letters",
            "short": "836",
            "query": "836*",
            "count": 87
          },
          {
            "name": "German humor & satire",
            "short": "837",
            "query": "837*",
            "count": 193
          },
          {
            "name": "German miscellaneous writings",
            "short": "838",
            "query": "838*",
            "count": 3830
          },
          {
            "name": "Other Germanic literatures",
            "short": "839",
            "query": "839*",
            "count": 6288
          }
        ],
        "count": 38372
      },
      {
        "name": "French & related literatures",
        "short": "84X",
        "query": "84*",
        "children": [
          {
            "name": "French literature & literatures of related Romance languages",
            "short": "840",
            "query": "840*",
            "count": 4382
          },
          {
            "name": "French poetry",
            "short": "841",
            "query": "841*",
            "count": 14124
          },
          {
            "name": "French drama",
            "short": "842",
            "query": "842*",
            "count": 5241
          },
          {
            "name": "French fiction",
            "short": "843",
            "query": "843*",
            "count": 32320
          },
          {
            "name": "French essays",
            "short": "844",
            "query": "844*",
            "count": 1265
          },
          {
            "name": "French speeches",
            "short": "845",
            "query": "845*",
            "count": 48
          },
          {
            "name": "French letters",
            "short": "846",
            "query": "846*",
            "count": 285
          },
          {
            "name": "French humor & satire",
            "short": "847",
            "query": "847*",
            "count": 190
          },
          {
            "name": "French miscellaneous writings",
            "short": "848",
            "query": "848*",
            "count": 7746
          },
          {
            "name": "Occitan, Catalan, Franco-Provençal literatures",
            "short": "849",
            "query": "849*",
            "count": 1787
          }
        ],
        "count": 66725
      },
      {
        "name": "Italian, Romanian, & related literatures",
        "short": "85X",
        "query": "85*",
        "children": [
          {
            "name": "Literatures of Italian, Dalmatian, Romanian, Rhaetian, Sardinian, Corsican languages",
            "short": "850",
            "query": "850*",
            "count": 1733
          },
          {
            "name": "Italian poetry",
            "short": "851",
            "query": "851*",
            "count": 5753
          },
          {
            "name": "Italian drama",
            "short": "852",
            "query": "852*",
            "count": 1611
          },
          {
            "name": "Italian fiction",
            "short": "853",
            "query": "853*",
            "count": 8133
          },
          {
            "name": "Italian essays",
            "short": "854",
            "query": "854*",
            "count": 231
          },
          {
            "name": "Italian speeches",
            "short": "855",
            "query": "855*",
            "count": 13
          },
          {
            "name": "Italian letters",
            "short": "856",
            "query": "856*",
            "count": 80
          },
          {
            "name": "Italian humor & satire",
            "short": "857",
            "query": "857*",
            "count": 36
          },
          {
            "name": "Italian miscellaneous writings",
            "short": "858",
            "query": "858*",
            "count": 1276
          },
          {
            "name": "Literatures of Romanian, Rhaetian, Sardinian, Corsican languages",
            "short": "859",
            "query": "859*",
            "count": 509
          }
        ],
        "count": 19237
      },
      {
        "name": "Spanish, Portuguese, Galician literatures",
        "short": "86X",
        "query": "86*",
        "children": [
          {
            "name": "Literatures of Spanish, Portuguese, Galician languages",
            "short": "860",
            "query": "860*",
            "count": 4096
          },
          {
            "name": "Spanish poetry",
            "short": "861",
            "query": "861*",
            "count": 14473
          },
          {
            "name": "Spanish drama",
            "short": "862",
            "query": "862*",
            "count": 3674
          },
          {
            "name": "Spanish fiction",
            "short": "863",
            "query": "863*",
            "count": 20415
          },
          {
            "name": "Spanish essays",
            "short": "864",
            "query": "864*",
            "count": 1269
          },
          {
            "name": "Spanish speeches",
            "short": "865",
            "query": "865*",
            "count": 33
          },
          {
            "name": "Spanish letters",
            "short": "866",
            "query": "866*",
            "count": 29
          },
          {
            "name": "Spanish humor & satire",
            "short": "867",
            "query": "867*",
            "count": 89
          },
          {
            "name": "Spanish miscellaneous writings",
            "short": "868",
            "query": "868*",
            "count": 3251
          },
          {
            "name": "Literatures of Portuguese & Galician languages",
            "short": "869",
            "query": "869*",
            "count": 10857
          }
        ],
        "count": 57955
      },
      {
        "name": "Latin & Italic literatures",
        "short": "87X",
        "query": "87*",
        "children": [
          {
            "name": "Latin literature & literatures of related Italic languages",
            "short": "870",
            "query": "870*",
            "count": 545
          },
          {
            "name": "Latin poetry",
            "short": "871",
            "query": "871*",
            "count": 1360
          },
          {
            "name": "Latin dramatic poetry & drama",
            "short": "872",
            "query": "872*",
            "count": 517
          },
          {
            "name": "Latin epic poetry & fiction",
            "short": "873",
            "query": "873*",
            "count": 888
          },
          {
            "name": "Latin lyric poetry",
            "short": "874",
            "query": "874*",
            "count": 471
          },
          {
            "name": "Latin speeches",
            "short": "875",
            "query": "875*",
            "count": 224
          },
          {
            "name": "Latin letters",
            "short": "876",
            "query": "876*",
            "count": 88
          },
          {
            "name": "Latin humor & satire",
            "short": "877",
            "query": "877*",
            "count": 89
          },
          {
            "name": "Latin miscellaneous writings",
            "short": "878",
            "query": "878*",
            "count": 443
          },
          {
            "name": "Literatures of other Italic languages",
            "short": "879",
            "query": "879*",
            "count": 155
          }
        ],
        "count": 4683
      },
      {
        "name": "Classical & modern Greek literatures",
        "short": "88X",
        "query": "88*",
        "children": [
          {
            "name": "Classical Greek literature & literatures of related Hellenic languages",
            "short": "880",
            "query": "880*",
            "count": 946
          },
          {
            "name": "Classical Greek poetry",
            "short": "881",
            "query": "881*",
            "count": 561
          },
          {
            "name": "Classical Greek drama",
            "short": "882",
            "query": "882*",
            "count": 1569
          },
          {
            "name": "Classical Greek epic poetry & fiction",
            "short": "883",
            "query": "883*",
            "count": 1062
          },
          {
            "name": "Classical Greek lyric poetry",
            "short": "884",
            "query": "884*",
            "count": 377
          },
          {
            "name": "Classical Greek speeches",
            "short": "885",
            "query": "885*",
            "count": 237
          },
          {
            "name": "Classical Greek letters",
            "short": "886",
            "query": "886*",
            "count": 26
          },
          {
            "name": "Classical Greek humor & satire",
            "short": "887",
            "query": "887*",
            "count": 46
          },
          {
            "name": "Classical Greek miscellaneous writings",
            "short": "888",
            "query": "888*",
            "count": 448
          },
          {
            "name": "Modern Greek literature",
            "short": "889",
            "query": "889*",
            "count": 588
          }
        ],
        "count": 5794
      },
      {
        "name": "Other literatures",
        "short": "89X",
        "query": "89*",
        "children": [
          {
            "name": "Literatures of other specific languages and language families",
            "short": "890",
            "query": "890*",
            "count": 183
          },
          {
            "name": "East Indo-European & Celtic literatures",
            "short": "891",
            "query": "891*",
            "count": 22502
          },
          {
            "name": "Afro-Asiatic literatures",
            "short": "892",
            "query": "892*",
            "count": 2786
          },
          {
            "name": "Non-Semitic Afro-Asiatic literatures",
            "short": "893",
            "query": "893*",
            "count": 163
          },
          {
            "name": "Literatures of Altaic, Uralic, Hyperborean, Dravidian languages; literatures of miscellaneous languages of South Asia",
            "short": "894",
            "query": "894*",
            "count": 2385
          },
          {
            "name": "Literatures of East & Southeast Asia",
            "short": "895",
            "query": "895*",
            "count": 14286
          },
          {
            "name": "African literatures",
            "short": "896",
            "query": "896*",
            "count": 333
          },
          {
            "name": "Literatures of North American native languages",
            "short": "897",
            "query": "897*",
            "count": 242
          },
          {
            "name": "Literatures of South American native languages",
            "short": "898",
            "query": "898*",
            "count": 89
          },
          {
            "name": "Literatures of non-Austronesian languages of Oceania, of Austronesian languages, of miscellaneous languages",
            "short": "899",
            "query": "899*",
            "count": 560
          }
        ],
        "count": 43518
      }
    ],
    "count": 762915
  },
  {
    "name": "History & geography",
    "short": "9XX",
    "query": "9*",
    "children": [
      {
        "name": "History",
        "short": "90X",
        "query": "90*",
        "children": [
          {
            "name": "History, geography, & auxiliary disciplines",
            "short": "900",
            "query": "900*",
            "count": 603
          },
          {
            "name": "Philosophy & theory of history",
            "short": "901",
            "query": "901*",
            "count": 2927
          },
          {
            "name": "Miscellany of history",
            "short": "902",
            "query": "902*",
            "count": 310
          },
          {
            "name": "Dictionaries, encyclopedias, concordances of history",
            "short": "903",
            "query": "903*",
            "count": 143
          },
          {
            "name": "Collected accounts of events",
            "short": "904",
            "query": "904*",
            "count": 545
          },
          {
            "name": "Serial publications of history",
            "short": "905",
            "query": "905*",
            "count": 21
          },
          {
            "name": "Organizations & management of history",
            "short": "906",
            "query": "906*",
            "count": 26
          },
          {
            "name": "Education, research, related topics of history",
            "short": "907",
            "query": "907*",
            "count": 2258
          },
          {
            "name": "History with respect to groups of people",
            "short": "908",
            "query": "908*",
            "count": 248
          },
          {
            "name": "World history",
            "short": "909",
            "query": "909*",
            "count": 10535
          }
        ],
        "count": 17449
      },
      {
        "name": "Geography & travel",
        "short": "91X",
        "query": "91*",
        "children": [
          {
            "name": "Geography & travel",
            "short": "910",
            "query": "910*",
            "count": 14515
          },
          {
            "name": "Historical geography",
            "short": "911",
            "query": "911*",
            "count": 1033
          },
          {
            "name": "Graphic representations of surface of earth and of extraterrestrial worlds",
            "short": "912",
            "query": "912*",
            "count": 3916
          },
          {
            "name": "Geography of & travel in ancient world",
            "short": "913",
            "query": "913*",
            "count": 3698
          },
          {
            "name": "Geography of & travel in Europe",
            "short": "914",
            "query": "914*",
            "count": 36402
          },
          {
            "name": "Geography of & travel in Asia",
            "short": "915",
            "query": "915*",
            "count": 11201
          },
          {
            "name": "Geography of & travel in Africa",
            "short": "916",
            "query": "916*",
            "count": 5837
          },
          {
            "name": "Geography of & travel in North America",
            "short": "917",
            "query": "917*",
            "count": 34097
          },
          {
            "name": "Geography of & travel in South America",
            "short": "918",
            "query": "918*",
            "count": 3542
          },
          {
            "name": "Geography of & travel in Australasia, Pacific Ocean islands, Atlantic Ocean islands, Arctic islands, Antarctica, & on extraterrestrial worlds",
            "short": "919",
            "query": "919*",
            "count": 6132
          }
        ],
        "count": 119947
      },
      {
        "name": "Biography & genealogy",
        "short": "92X",
        "query": "92*",
        "children": [
          {
            "name": "Biography, genealogy, insignia",
            "short": "920",
            "query": "920*",
            "count": 12313
          },
          {
            "name": "928 This range is reserved as an optional location for biographies, which are shelved alphabetically by subject's last name.",
            "short": "921–928",
            "query": "[921 TO 928]",
            "count": 15329
          },
          {
            "name": "Genealogy, names, insignia",
            "short": "929",
            "query": "929*",
            "count": 61705
          }
        ],
        "count": 94252
      },
      {
        "name": "History of ancient world (to ca. 499)",
        "short": "93X",
        "query": "93*",
        "children": [
          {
            "name": "History of ancient world to ca. 499",
            "short": "930",
            "query": "930*",
            "count": 3897
          },
          {
            "name": "China to 420",
            "short": "931",
            "query": "931*",
            "count": 683
          },
          {
            "name": "Egypt to 640",
            "short": "932",
            "query": "932*",
            "count": 2318
          },
          {
            "name": "Palestine to 70",
            "short": "933",
            "query": "933*",
            "count": 901
          },
          {
            "name": "South Asia to 647",
            "short": "934",
            "query": "934*",
            "count": 990
          },
          {
            "name": "Mesopotamia to 637 & Iranian Plateau to 637",
            "short": "935",
            "query": "935*",
            "count": 739
          },
          {
            "name": "Europe north & west of Italian Peninsula to ca. 499",
            "short": "936",
            "query": "936*",
            "count": 5684
          },
          {
            "name": "Italian Peninsula to 476 & adjacent territories to 476",
            "short": "937",
            "query": "937*",
            "count": 5291
          },
          {
            "name": "Greece to 323",
            "short": "938",
            "query": "938*",
            "count": 2803
          },
          {
            "name": "Other parts of ancient world",
            "short": "939",
            "query": "939*",
            "count": 2365
          }
        ],
        "count": 25482
      },
      {
        "name": "History of Europe",
        "short": "94X",
        "query": "94*",
        "children": [
          {
            "name": "History of Europe",
            "short": "940",
            "query": "940*",
            "count": 47655
          },
          {
            "name": "British Isles",
            "short": "941",
            "query": "941*",
            "count": 15856
          },
          {
            "name": "England & Wales",
            "short": "942",
            "query": "942*",
            "count": 19406
          },
          {
            "name": "Germany & neighboring central European countries",
            "short": "943",
            "query": "943*",
            "count": 23402
          },
          {
            "name": "France & Monaco",
            "short": "944",
            "query": "944*",
            "count": 19267
          },
          {
            "name": "Italy, San Marino, Vatican City, Malta",
            "short": "945",
            "query": "945*",
            "count": 11257
          },
          {
            "name": "Spain, Andorra, Gibraltar, Portugal",
            "short": "946",
            "query": "946*",
            "count": 10811
          },
          {
            "name": "Russia & neighboring east European countries",
            "short": "947",
            "query": "947*",
            "count": 9074
          },
          {
            "name": "Scandinavia",
            "short": "948",
            "query": "948*",
            "count": 1358
          },
          {
            "name": "Other parts of Europe",
            "short": "949",
            "query": "949*",
            "count": 8141
          }
        ],
        "count": 165356
      },
      {
        "name": "History of Asia",
        "short": "95X",
        "query": "95*",
        "children": [
          {
            "name": "History of Asia",
            "short": "950",
            "query": "950*",
            "count": 1380
          },
          {
            "name": "China & adjacent areas",
            "short": "951",
            "query": "951*",
            "count": 9814
          },
          {
            "name": "Japan",
            "short": "952",
            "query": "952*",
            "count": 1881
          },
          {
            "name": "Arabian Peninsula & adjacent areas",
            "short": "953",
            "query": "953*",
            "count": 1098
          },
          {
            "name": "India & neighboring south Asian countries;",
            "short": "954",
            "query": "954*",
            "count": 11345
          },
          {
            "name": "Iran",
            "short": "955",
            "query": "955*",
            "count": 1014
          },
          {
            "name": "Middle East (Near East)",
            "short": "956",
            "query": "956*",
            "count": 9071
          },
          {
            "name": "Siberia (Asiatic Russia)",
            "short": "957",
            "query": "957*",
            "count": 216
          },
          {
            "name": "Central Asia",
            "short": "958",
            "query": "958*",
            "count": 1418
          },
          {
            "name": "Southeast Asia",
            "short": "959",
            "query": "959*",
            "count": 8347
          }
        ],
        "count": 45485
      },
      {
        "name": "History of Africa",
        "short": "96X",
        "query": "96*",
        "children": [
          {
            "name": "History of Africa",
            "short": "960",
            "query": "960*",
            "count": 1741
          },
          {
            "name": "Tunisia & Libya",
            "short": "961",
            "query": "961*",
            "count": 615
          },
          {
            "name": "Egypt, Sudan, South Sudan",
            "short": "962",
            "query": "962*",
            "count": 1306
          },
          {
            "name": "Ethiopia & Eritrea",
            "short": "963",
            "query": "963*",
            "count": 713
          },
          {
            "name": "Morocco, Ceuta, Melilla Western Sahara, Canary Islands",
            "short": "964",
            "query": "964*",
            "count": 663
          },
          {
            "name": "Algeria",
            "short": "965",
            "query": "965*",
            "count": 940
          },
          {
            "name": "West Africa & offshore islands",
            "short": "966",
            "query": "966*",
            "count": 3529
          },
          {
            "name": "Central Africa & offshore islands",
            "short": "967",
            "query": "967*",
            "count": 3719
          },
          {
            "name": "Republic of South Africa & neighboring southern African countries",
            "short": "968",
            "query": "968*",
            "count": 4116
          },
          {
            "name": "South Indian Ocean islands",
            "short": "969",
            "query": "969*",
            "count": 578
          }
        ],
        "count": 17865
      },
      {
        "name": "History of North America",
        "short": "97X",
        "query": "97*",
        "children": [
          {
            "name": "History of North America",
            "short": "970",
            "query": "970*",
            "count": 7851
          },
          {
            "name": "Canada",
            "short": "971",
            "query": "971*",
            "count": 16977
          },
          {
            "name": "Mexico, Central America, West Indies, Bermuda",
            "short": "972",
            "query": "972*",
            "count": 16437
          },
          {
            "name": "United States",
            "short": "973",
            "query": "973*",
            "count": 40937
          },
          {
            "name": "Northeastern United States (New England & Middle Atlantic states)",
            "short": "974",
            "query": "974*",
            "count": 12319
          },
          {
            "name": "Southeastern United States (South Atlantic states)",
            "short": "975",
            "query": "975*",
            "count": 9593
          },
          {
            "name": "South central United States",
            "short": "976",
            "query": "976*",
            "count": 8791
          },
          {
            "name": "North central United States",
            "short": "977",
            "query": "977*",
            "count": 8365
          },
          {
            "name": "Western United States",
            "short": "978",
            "query": "978*",
            "count": 7768
          },
          {
            "name": "Great Basin & Pacific Slope region of United States",
            "short": "979",
            "query": "979*",
            "count": 10302
          }
        ],
        "count": 138431
      },
      {
        "name": "History of South America",
        "short": "98X",
        "query": "98*",
        "children": [
          {
            "name": "History of South America",
            "short": "980",
            "query": "980*",
            "count": 3463
          },
          {
            "name": "Brazil",
            "short": "981",
            "query": "981*",
            "count": 5060
          },
          {
            "name": "Argentina",
            "short": "982",
            "query": "982*",
            "count": 2992
          },
          {
            "name": "Chile",
            "short": "983",
            "query": "983*",
            "count": 1146
          },
          {
            "name": "Bolivia",
            "short": "984",
            "query": "984*",
            "count": 827
          },
          {
            "name": "Peru",
            "short": "985",
            "query": "985*",
            "count": 1931
          },
          {
            "name": "Colombia & Ecuador",
            "short": "986",
            "query": "986*",
            "count": 2458
          },
          {
            "name": "Venezuela",
            "short": "987",
            "query": "987*",
            "count": 1451
          },
          {
            "name": "Guiana",
            "short": "988",
            "query": "988*",
            "count": 252
          },
          {
            "name": "Paraguay & Uruguay",
            "short": "989",
            "query": "989*",
            "count": 1246
          }
        ],
        "count": 20776
      },
      {
        "name": "History of other areas",
        "short": "99X",
        "query": "99*",
        "children": [
          {
            "name": "History of Australasia, Pacific Ocean islands, Atlantic Ocean islands, Arctic islands, Antarctica, extraterrestrial worlds",
            "short": "990",
            "query": "990*",
            "count": 174
          },
          {
            "name": "992 Not assigned or no longer used",
            "short": "991–992",
            "query": "[991 TO 992]",
            "count": 283
          },
          {
            "name": "New Zealand",
            "short": "993",
            "query": "993*",
            "count": 1318
          },
          {
            "name": "Australia",
            "short": "994",
            "query": "994*",
            "count": 3597
          },
          {
            "name": "New Guinea & neighboring countries of Melanesia",
            "short": "995",
            "query": "995*",
            "count": 388
          },
          {
            "name": "Polynesia & other Pacific Ocean islands",
            "short": "996",
            "query": "996*",
            "count": 1207
          },
          {
            "name": "Atlantic Ocean islands",
            "short": "997",
            "query": "997*",
            "count": 387
          },
          {
            "name": "Arctic islands & Antarctica",
            "short": "998",
            "query": "998*",
            "count": 216
          },
          {
            "name": "Extraterrestrial worlds",
            "short": "999",
            "query": "999*",
            "count": 57
          }
        ],
        "count": 7632
      }
    ],
    "count": 645745
  }
]