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Subjects
- Military Hygiene1
- Naval Medicine1
- Pensions1
- Periodicals as Topic1
- Physicians1
- Poverty1
- Professional Practice1
- Smallpox Vaccine1
- Societies, Medical -- organization & administration1
- Technology1
- Transportation -- methods1
- United States. Marine Hospital Service.1
- Urban Population1
- Vaccines, Live, Unattenuated1
- Vital Statistics1