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Library of Congress Subject Areas (523)
- A General Works (14)
  - AC Collections. Series. Collected works (11)
  - AI Indexes (General) (2)
  - AS Academies and learned societies (General) (1)
- B Philosophy. Psychology. Religion (8)
  - BL Religion (7)
  - BP Islam. Bahaism. Theosophy, etc (1)
- C Auxiliary Sciences of History (1)
  - CT Biography (1)
- G Geography. Anthropology. Recreation (3)
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- H Social Sciences (13)
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  - HQ The family. Marriage. Woman (1)
- P Language and Literature (2)
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- Q Science (2)
  - Q Science (General) (2)
- R Medicine (461)
  - R Medicine (General) (153)
  - RA Public aspects of medicine (8)
    - RA0421 Public health. Hygiene. Preventive Medicine (5)
  - RG Gynecology and obstetrics (138)
  - RT Nursing (144)
  - RZ Other systems of medicine (22)
- S Agriculture (6)
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  - SH Aquaculture. Fisheries. Angling (1)
- T Technology (15)
  - T Technology (General) (5)
  - TA Engineering (General). Civil engineering (General) (1)
  - TD Environmental technology. Sanitary engineering (9)
- Z Bibliography. Library Science. Information Resources (1)
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