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Library of Congress Subject Areas (26869)
- A General Works (149)
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  - AM Museums (General). Collectors and collecting (General) (8)
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- B Philosophy. Psychology. Religion (75)
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- C Auxiliary Sciences of History (8)
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- G Geography. Anthropology. Recreation (100)
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- H Social Sciences (9185)
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    - HD1401 Agriculture-Economic aspects (133)
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- M Music and Books on Music (28)
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- N Fine Arts (1478)
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- P Language and Literature (526)
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- Q Science (2345)
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- R Medicine (43)
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    - RC0254 Neoplasms. Tumors. Oncology (including Cancer) (1)
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  - RS Pharmacy and materia medica (2)
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- S Agriculture (2205)
  - S Agriculture (General) (1894)
    - S590-599.9 Soils. Soil science (240)
    - S631-667 Fertilizers and Improvement of the soil (205)
  - SB Plant culture (393)
    - SB599-990.5 Pests and Diseases (110)
    - SB950-989 Pest Control and Treatment of Diseases, Plant Protection (192)
  - SD Forestry (48)
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  - SH Aquaculture. Fisheries. Angling (36)
  - SK Hunting sports (3)
- T Technology (8802)
  - T Technology (General) (3202)
    - T55.4-60.8 Industrial engineering. Management engineering (790)
    - T201 Patents. Trademarks (9)
    - T385 Computer Graphics (175)
    - T58.6-58.62 Management Information Systems (887)
  - TA Engineering (General). Civil engineering (General) (887)
  - TC Hydraulic engineering. Ocean engineering (15)
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  - TE Highway engineering. Roads and pavements (74)
  - TF Railroad engineering and operation (16)
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  - TH Building construction (102)
  - TJ Mechanical engineering and machinery (175)
  - TK Electrical engineering. Electronics Nuclear engineering (181)
    - TK5105 Computer Network (82)
    - TK5105.882 Internet (67)
    - TK5105.888 World Wild Web (67)
  - TL Motor vehicles. Aeronautics. Astronautics (9)
  - TN Mining engineering. Metallurgy (12)
  - TP Chemical technology (2951)
    - TP155 Chemical engineering (2254)
    - TP368 Food processing and manufacture (530)
    - TP500 Fermentation industries. Beverages. Alcohol (20)
  - TR Photography (25)
  - TS Manufactures (420)
    - TS 155-194 Production Management, Operations Management (300)
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  - TT Handicrafts Arts and crafts (14)
  - TX Home economics (25)
- U Military Science (15)
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- V Naval Science (11)
  - V Naval Science (General) (3)
  - VM Naval architecture. Shipbuilding. Marine engineering (8)
- Z Bibliography. Library Science. Information Resources (108)
  - Z004 Books. Writing. Paleography (9)
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  - Z719 Libraries (General) (17)
  - ZA Information resources (47)
    - ZA4050 Electronic information resources (20)
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