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Subject
- Public health[remove]436
- Medical education232
- Diaries 143
- Hygiene141
- Malaria125
- Nursing103
- Sanitation73
- Yellow fever71
- Tuberculosis68
- Nutrition42
- Tropical medicine42
- Hookworm disease38
- Medicine, Preventive31
- Epidemiology30
- DDT (Insecticide)29
- Public health nursing28
- indexes (reference sources)28
- Medicine -- Research24
- Typhus fever23
- Psychiatry22