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Library of Congress Subject Areas (7314)
- A General Works (کلیات) (3)
  - AC Collections. Series. Collected works (2)
  - AS Academies and learned societies (General) (1)
- B Philosophy. Psychology. Religion (2)
  - BF Psychology (2)
- D History General and Old World (1)
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- H Social Sciences (4)
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- L Education (14)
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- Q Science (23)
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    - QH426 Genetics (1)
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- QS Human Anatomy (14)
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- QU Biochemistry (81)
- QV pharmacology (78)
- QW Microbiology and Immunology (103)
- QX Parasitology (21)
- QY Clinical Pathology (35)
- QZ Pathology (100)
- R Medicine (4804)
  - Environmental Health (30)
  - R Medicine (General) (2402)
  - RA Public aspects of medicine (1)
    - RA0421 Public health. Hygiene. Preventive Medicine (1)
  - RC Internal medicine (1053)
    - RC0254 Neoplasms. Tumors. Oncology (including Cancer) (10)
    - RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry (1037)
  - RD Surgery (456)
  - RE Ophthalmology (1)
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  - RG Gynecology and obstetrics (125)
  - RK Dentistry (4)
  - RM Therapeutics. Pharmacology (1)
  - RT Nursing (214)
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  - RZ Other systems of medicine (552)
- T Technology (44)
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  - TA Engineering (General). Civil engineering (General) (1)
  - TD Environmental technology. Sanitary engineering (40)
  - TJ Mechanical engineering and machinery (2)
- U Military Science (1)
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- V Naval Science (1)
  - V Naval Science (General) (1)
- W General Medicine , Health professions (29)
- WA Public Health (494)
- WB Practice of Medicine (153)
- WC Communicable Diseases (38)
- WD Nutrition Disease and metabolic diseases (19)
- WE Musculoskeletal system (12)
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- WG Cardiovascular System (66)
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- WI Digestive System (7)
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- WL Nervous system (31)
- WM Psychiatry (23)
- WN Radiology . Diagnostic Imaging (56)
- WO Surgery (10)
- WP Gynecology (46)
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- WS Pediatrics (155)
- WT Geriatrics . Chronic Diseases (17)
- WU Dentistry. Oral surgery (169)
- WV Otolaryngology (2)
- WW Ophthalmology (28)
- WX Hospital and other health Facilities (4)
- WY Nursing (138)
- WZ History of Medicine (2)
- Z Bibliography. Library Science. Information Resources (348)
  - Z665 Library Science. Information Science (15)
  - ZA Information resources (333)
    - ZA4450 Databases (1)