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Library of Congress Subject Areas (6847)
- A General Works (53)
  - AC Collections. Series. Collected works (17)
  - AI Indexes (General) (26)
  - AM Museums (General). Collectors and collecting (General) (1)
  - AS Academies and learned societies (General) (11)
- B Philosophy. Psychology. Religion (220)
  - B Philosophy (General) (12)
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- C Auxiliary Sciences of History (1)
  - C Auxiliary sciences of history (General) (1)
- D History General and Old World (1)
  - D History (General) (1)
- G Geography. Anthropology. Recreation (4)
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- H Social Sciences (70)
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- L Education (187)
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    - LC5201 Education extension. Adult education. Continuing education (2)
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- Q Science (305)
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- R Medicine (6048)
  - R Medicine (General) (1370)
  - RA Public aspects of medicine (253)
    - RA0421 Public health. Hygiene. Preventive Medicine (206)
    - RA1001 Forensic Medicine. Medical jurisprudence. Legal medicine (2)
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    - RC0254 Neoplasms. Tumors. Oncology (including Cancer) (15)
    - RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry (15)
    - RC1200 Sports Medicine (5)
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  - RZ Other systems of medicine (116)
  - RH Basic Medical Sciences (211)
    - RH1001 Biochemistry & Genetics (185)
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  - RP Paramedical (743)
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    - RP105 Biotechnology (216)
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- S Agriculture (7)
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- Z Bibliography. Library Science. Information Resources (7)
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