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Library of Congress Subject Areas (518)
- B Philosophy. Psychology. Religion (17)
  - BC Logic (2)
  - BF Psychology (14)
  - BH Aesthetics (1)
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- G Geography. Anthropology. Recreation (1)
  - GC Oceanography (1)
- H Social Sciences (42)
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  - HB Economic Theory (4)
  - HC Economic History and Conditions (2)
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    - HD28 Management. Industrial Management (6)
    - HD61 Risk Management (1)
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  - HN Social history and conditions. Social problems. Social reform (8)
  - HQ The family. Marriage. Woman (1)
  - HS Societies secret benevolent etc (1)
- L Education (34)
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  - LA History of education (1)
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- P Language and Literature (1)
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- Q Science (237)
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    - QH301 Biology (1)
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- R Medicine (383)
  - R Medicine (General) (301)
  - RA Public aspects of medicine (61)
    - RA0421 Public health. Hygiene. Preventive Medicine (38)
  - RB Pathology (3)
  - RC Internal medicine (12)
    - RC0254 Neoplasms. Tumors. Oncology (including Cancer) (1)
  - RG Gynecology and obstetrics (3)
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  - RL Dermatology (21)
  - RM Therapeutics. Pharmacology (65)
  - RS Pharmacy and materia medica (177)
  - RT Nursing (2)
  - RV Botanic, Thomsonian, and eclectic medicine (128)
  - RZ Other systems of medicine (19)
- S Agriculture (4)
  - SB Plant culture (4)
- T Technology (34)
  - T Technology (General) (27)
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