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Library of Congress Subject Areas (236)
- Q Science (32)
  - Q Science (General) (23)
  - QD Chemistry (1)
  - QH Natural history (14)
    - QH301 Biology (14)
    - QH426 Genetics (1)
  - QM Human anatomy (1)
  - QR Microbiology (5)
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    - QR355 Virology (1)
- R Medicine (209)
  - R Medicine (General) (112)
  - RG Gynecology and obstetrics (12)
  - RJ Pediatrics (1)
  - RS Pharmacy and materia medica (44)
  - RT Nursing (71)
  - RZ Other systems of medicine (17)