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Library of Congress Subject Areas (7637)
- A General Works (کلیات) (5)
  - AC Collections. Series. Collected works (4)
  - AS Academies and learned societies (General) (1)
- B Philosophy. Psychology. Religion (10)
  - BF Psychology (10)
- D History General and Old World (1)
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- G Geography. Anthropology. Recreation (1)
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- L Education (15)
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- Q Science (27)
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- QS Human Anatomy (16)
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- QV pharmacology (88)
- QW Microbiology and Immunology (125)
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- QY Clinical Pathology (37)
- QZ Pathology (115)
- R Medicine (4814)
  - Environmental Health (31)
  - R Medicine (General) (2404)
  - RA Public aspects of medicine (1)
    - RA0421 Public health. Hygiene. Preventive Medicine (1)
  - RB Pathology (1)
  - RC Internal medicine (1059)
    - RC0254 Neoplasms. Tumors. Oncology (including Cancer) (15)
    - RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry (1037)
    - RC1200 Sports Medicine (1)
  - RD Surgery (456)
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  - RG Gynecology and obstetrics (125)
  - RK Dentistry (4)
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  - RT Nursing (214)
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  - RZ Other systems of medicine (552)
- T Technology (87)
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  - TD Environmental technology. Sanitary engineering (82)
  - TJ Mechanical engineering and machinery (2)
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- V Naval Science (2)
  - V Naval Science (General) (2)
- W General Medicine , Health professions (40)
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- WB Practice of Medicine (169)
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- WD Nutrition Disease and metabolic diseases (21)
- WE Musculoskeletal system (16)
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- WS Pediatrics (158)
- WT Geriatrics . Chronic Diseases (26)
- WU Dentistry. Oral surgery (177)
- WV Otolaryngology (2)
- WW Ophthalmology (29)
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- WY Nursing (139)
- WZ History of Medicine (3)
- Z Bibliography. Library Science. Information Resources (354)
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  - Z719 Libraries (General) (1)
  - ZA Information resources (333)
    - ZA4450 Databases (1)