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Library of Congress Subject Areas (13645)
- A General Works (68)
  - AC Collections. Series. Collected works (18)
  - AI Indexes (General) (4)
  - AM Museums (General). Collectors and collecting (General) (4)
  - AS Academies and learned societies (General) (37)
  - AZ History of Scholarship The Humanities (9)
- B Philosophy. Psychology. Religion (316)
  - B Philosophy (General) (18)
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    - BV1460 Religious Education (2)
- C Auxiliary Sciences of History (14)
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- D History General and Old World (103)
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    - D839 Post-war History, 1945 on (1)
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- G Geography. Anthropology. Recreation (838)
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- H Social Sciences (2577)
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  - HQ The family. Marriage. Woman (99)
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- J Political Science (50)
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- K Law (18)
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- L Education (7684)
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- M Music and Books on Music (195)
  - M Music (83)
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- N Fine Arts (377)
  - N Visual arts (General) For photography, see TR (91)
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- P Language and Literature (1297)
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- Q Science (2791)
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- R Medicine (107)
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- S Agriculture (61)
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- T Technology (460)
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  - TX Home economics (33)
- Z Bibliography. Library Science. Information Resources (297)
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  - Z665 Library Science. Information Science (182)
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  - ZA Information resources (31)
    - ZA4050 Electronic information resources (11)
    - ZA4450 Databases (6)