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Library of Congress Subject Areas (10406)
- A General Works (45)
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  - AM Museums (General). Collectors and collecting (General) (8)
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- B Philosophy. Psychology. Religion (613)
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- C Auxiliary Sciences of History (63)
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- D History General and Old World (145)
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- E History America (38)
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- F History United States, Canada, Latin America (91)
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- G Geography. Anthropology. Recreation (785)
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- M Music and Books on Music (276)
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- N Fine Arts (852)
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- Q Science (1985)
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- R Medicine (1482)
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- S Agriculture (1177)
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- T Technology (1109)
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- U Military Science (8)
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- V Naval Science (38)
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  - VM Naval architecture. Shipbuilding. Marine engineering (18)
- Z Bibliography. Library Science. Information Resources (201)
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  - Z665 Library Science. Information Science (49)
  - Z719 Libraries (General) (16)
  - ZA Information resources (168)
    - ZA4050 Electronic information resources (77)
    - ZA4450 Databases (18)