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Subjects
- Communicable Disease Control[remove]17
- Plague -- prevention & control11
- San Francisco9
- United States. Public Health and Marine Hospital Service.7
- Rodent Control4
- Dissection2
- Laboratory Personnel2
- United States. Public Health Service.2
- Americas1
- Communicable Diseases -- epidemiology1
- Emigrants and Immigrants1
- Far East1
- Horses1
- International Cooperation1
- Meningitis -- prevention & control1
- Mexico1
- Michigan1