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Library of Congress Subject Areas (207)
- Q Science (27)
  - Q Science (General) (21)
  - QD Chemistry (1)
  - QH Natural history (11)
    - QH301 Biology (11)
  - QM Human anatomy (1)
  - QR Microbiology (5)
    - QR180 Immunology (3)
    - QR355 Virology (1)
- R Medicine (184)
  - R Medicine (General) (101)
  - RG Gynecology and obstetrics (11)
  - RS Pharmacy and materia medica (34)
  - RT Nursing (63)
  - RZ Other systems of medicine (17)