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Library of Congress Subject Areas (419)
- A General Works (1)
- B Philosophy. Psychology. Religion (73)
  - B Philosophy (General) (55)
  - BF Psychology (17)
  - BH Aesthetics (1)
  - BL Religion (12)
  - BP Islam. Bahaism. Theosophy, etc (2)
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    - BV1460 Religious Education (1)
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- E History America (2)
- G Geography. Anthropology. Recreation (1)
  - G Geography (General) (1)
- H Social Sciences (83)
  - H Social Sciences (General) (69)
  - HB Economic Theory (4)
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  - HN Social history and conditions. Social problems. Social reform (41)
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  - HV Social pathology. Social and public welfare (45)
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- L Education (26)
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    - LC5201 Education extension. Adult education. Continuing education (1)
  - LF Individual institutions (Europe) (4)
- M Music and Books on Music (5)
  - M Music (5)
- N Fine Arts (30)
  - N Visual arts (General) For photography, see TR (27)
  - NB Sculpture (4)
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  - NX Arts in general (25)
- P Language and Literature (1)
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- Q Science (113)
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- R Medicine (29)
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    - RC1200 Sports Medicine (2)
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- S Agriculture (2)
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- T Technology (209)
  - T Technology (General) (188)
  - TA Engineering (General). Civil engineering (General) (153)
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  - TK Electrical engineering. Electronics Nuclear engineering (136)
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- U Military Science (1)
  - U Military Science (General) (1)