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Subjects
- Tropical Medicine12
- United States8
- Communicable Disease Control6
- Malaria -- prevention & control6
- Military Medicine6
- Malaria -- history4
- Research4
- Yellow Fever -- history4
- Yellow Fever -- prevention & control4
- Expeditions3
- Laboratories3
- Warfare3
- Aedes2
- Communicable Diseases -- epidemiology2
- DDT2
- Dengue -- prevention & control2
- Disease Outbreaks2
- History, 20th Century2
- Insect Vectors2
- Military Personnel -- education2