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Library of Congress Subject Areas (8896)
- A General Works (44)
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  - AM Museums (General). Collectors and collecting (General) (8)
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- B Philosophy. Psychology. Religion (514)
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- C Auxiliary Sciences of History (60)
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- D History General and Old World (132)
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- G Geography. Anthropology. Recreation (674)
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- M Music and Books on Music (231)
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- N Fine Arts (621)
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- Q Science (1736)
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- R Medicine (1302)
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- S Agriculture (1049)
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- T Technology (849)
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- U Military Science (8)
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- V Naval Science (29)
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  - VM Naval architecture. Shipbuilding. Marine engineering (13)
- Z Bibliography. Library Science. Information Resources (147)
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  - Z665 Library Science. Information Science (42)
  - Z719 Libraries (General) (15)
  - ZA Information resources (117)
    - ZA4050 Electronic information resources (59)
    - ZA4450 Databases (16)