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Subjects
- Communicable Disease Control[remove]69
- Plague -- prevention & control16
- San Francisco9
- Rodent Control8
- United States. Public Health and Marine Hospital Service.7
- Typhus, Epidemic Louse-Borne5
- United States. Public Health Service.5
- Brazil4
- Italy4
- Lice Infestations4
- United States4
- Laboratory Personnel3
- Public Health3
- California2
- Chicago2
- Communicable Diseases -- epidemiology2
- Disease Outbreaks2
- Dissection2
- Florida2
- Health Planning2