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Library of Congress Subject Areas (763)
- A General Works (3)
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- B Philosophy. Psychology. Religion (6)
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- G Geography. Anthropology. Recreation (9)
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- H Social Sciences (84)
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- Q Science (161)
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- R Medicine (18)
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    - RC0254 Neoplasms. Tumors. Oncology (including Cancer) (1)
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- S Agriculture (241)
  - S Agriculture (General) (165)
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  - SH Aquaculture. Fisheries. Angling (10)
- T Technology (237)
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  - TA Engineering (General). Civil engineering (General) (41)
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- Z Bibliography. Library Science. Information Resources (35)
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    - ZA4050 Electronic information resources (2)