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Library of Congress Subject Areas (2000)
- A General Works (291)
  - AC Collections. Series. Collected works (75)
  - AI Indexes (General) (135)
  - AM Museums (General). Collectors and collecting (General) (28)
  - AS Academies and learned societies (General) (134)
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- B Philosophy. Psychology. Religion (3)
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- C Auxiliary Sciences of History (3)
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- D History General and Old World (3)
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- G Geography. Anthropology. Recreation (84)
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- L Education (54)
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- M Music and Books on Music (2)
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- Q Science (434)
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- R Medicine (18)
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- S Agriculture (29)
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- T Technology (1272)
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  - TP Chemical technology (150)
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- V Naval Science (145)
  - V Naval Science (General) (86)
  - VM Naval architecture. Shipbuilding. Marine engineering (121)
- Z Bibliography. Library Science. Information Resources (48)
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  - ZA Information resources (37)
    - ZA4050 Electronic information resources (14)
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