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Subjects
- Communicable Disease Control[remove]67
- Plague -- prevention & control16
- San Francisco9
- Rodent Control8
- United States. Public Health and Marine Hospital Service.7
- United States5
- United States. Public Health Service.5
- Laboratory Personnel3
- Mosquito Control3
- Public Health3
- Sanitation3
- Tropical Medicine3
- Yellow Fever3
- Africa2
- California2
- Chicago2
- Developing Countries2
- Dissection2
- Florida2
- Health Planning2