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Library of Congress Subject Areas (9)
- A General Works (2)
  - AC Collections. Series. Collected works (20)
  - AI Indexes (General) (37)
  - AM Museums (General). Collectors and collecting (General) (2)
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- B Philosophy. Psychology. Religion (3)
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- C Auxiliary Sciences of History (1)
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- L Education (9)
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- N Fine Arts (14)
  - N Visual arts (General) For photography, see TR (31)
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- R Medicine (3)
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- S Agriculture (1)
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- T Technology (2)
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    - T201 Patents. Trademarks (6)
  - TA Engineering (General). Civil engineering (General) (143)
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- U Military Science (1)
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- Z Bibliography. Library Science. Information Resources (32)
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  - ZA Information resources (32)
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