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Library of Congress Subject Areas (10323)
- A Accountant (3)
- A General Works (74)
  - AC Collections. Series. Collected works (63)
  - AM Museums (General). Collectors and collecting (General) (1)
  - AS Academies and learned societies (General) (5)
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- B Philosophy. Psychology. Religion (189)
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- C Auxiliary Sciences of History (6)
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- D History General and Old World (262)
  - D History (General) (241)
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- H Social Sciences (1095)
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- J Political Science (94)
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- K Law (41)
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- L Education (4680)
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- M Music and Books on Music (13)
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- N Fine Arts (222)
  - N Visual arts (General) For photography, see TR (28)
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- O Food (144)
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- Q Science (765)
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- R Medicine (279)
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- S Agriculture (59)
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- S Sport (1241)
- T Technology (2759)
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- U Military Science (2)
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- V Naval Science (1)
  - V Naval Science (General) (1)
- Z Bibliography. Library Science. Information Resources (123)
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  - ZA Information resources (30)
    - ZA4050 Electronic information resources (15)
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