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Library of Congress Subject Areas (8403)
- A General Works (20)
  - AC Collections. Series. Collected works (7)
  - AI Indexes (General) (5)
  - AM Museums (General). Collectors and collecting (General) (2)
  - AS Academies and learned societies (General) (6)
  - AZ History of Scholarship The Humanities (3)
- B Philosophy. Psychology. Religion (17)
  - B Philosophy (General) (1)
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- C Auxiliary Sciences of History (3)
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- D History General and Old World (1)
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    - D051 Ancient History (1)
- G Geography. Anthropology. Recreation (12)
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- H Social Sciences (2921)
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  - HD Industries. Land use. Labor (404)
    - HD1401 Agriculture-Economic aspects (52)
    - HD28 Management. Industrial Management (161)
    - HD30.213 Decision Support Systems (7)
    - HD30.27 Business Forecasting (8)
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    - HD30.3 Communication in Organizations (12)
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    - HD9000 Agricultural Industries (86)
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  - HE Transportation and Communications (20)
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    - HG4001-4285 Finance management. Business finance. Corporation finance (126)
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- J Political Science (304)
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- K Law (520)
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- L Education (616)
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- M Music and Books on Music (5)
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- N Fine Arts (451)
  - N Visual arts (157)
    - N400-3990 Art museums, galleries, etc. (7)
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    - N81-390 Study and teaching. Research (23)
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  - NA Architecture (195)
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  - NX Arts in general (21)
- P Language and Literature (294)
  - P Philology. Linguistics (276)
    - P87 Communication. Mass Media (224)
    - P94.7 Interpersonal communication (18)
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- Q Science (561)
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    - QA76.87 Neural computers (4)
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    - QA76 Computer software (49)
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- R Medicine (11)
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- S Agriculture (639)
  - S Agriculture (General) (547)
    - S590-599.9 Soils. Soil science (65)
    - S631-667 Fertilizers and Improvement of the soil (57)
  - SB Plant culture (97)
    - SB599-990.5 Pests and Diseases (19)
    - SB950-989 Pest Control and Treatment of Diseases, Plant Protection (43)
  - SD Forestry (8)
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  - SH Aquaculture. Fisheries. Angling (15)
- T Technology (2396)
  - T Technology (General) (562)
    - T55.4-60.8 Industrial engineering. Management engineering (152)
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    - T385 Computer Graphics (32)
    - T58.6-58.62 Management Information Systems (204)
  - TA Engineering (General). Civil engineering (General) (318)
  - TC Hydraulic engineering. Ocean engineering (2)
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  - TF Railroad engineering and operation (4)
  - TH Building construction (23)
  - TJ Mechanical engineering and machinery (14)
  - TK Electrical engineering. Electronics Nuclear engineering (67)
    - TK5105 Computer Network (36)
    - TK5105.882 Internet (25)
    - TK5105.888 World Wild Web (22)
  - TL Motor vehicles. Aeronautics. Astronautics (1)
  - TN Mining engineering. Metallurgy (2)
  - TP Chemical technology (925)
    - TP155 Chemical engineering (649)
    - TP368 Food processing and manufacture (178)
    - TP500 Fermentation industries. Beverages. Alcohol (4)
  - TR Photography (6)
  - TS Manufactures (80)
    - TS 155-194 Production Management, Operations Management (61)
    - TS 180-TS180.8 Material Handling (6)
  - TT Handicrafts Arts and crafts (3)
  - TX Home economics (6)
- U Military Science (4)
  - U Military Science (General) (4)
- V Naval Science (3)
  - VM Naval architecture. Shipbuilding. Marine engineering (3)
- Z Bibliography. Library Science. Information Resources (19)
  - Z004 Books. Writing. Paleography (1)
  - Z665 Library Science. Information Science (9)
  - Z719 Libraries (General) (4)
  - ZA Information resources (8)
    - ZA4050 Electronic information resources (2)
    - ZA4450 Databases (6)