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Subjects
- Mexico20
- Epidemics9
- Nonprescription Drugs8
- Cholera -- therapy7
- Pharmaceutical Preparations5
- United States5
- Military Hygiene3
- New York City3
- Philadelphia3
- Rabies -- drug therapy3
- Smallpox3
- Vaccination3
- Astronomical Phenomena2
- Charities2
- Cholera2
- Cowpox2
- Dental Care2
- Dentistry, Operative2
- Disease Outbreaks2
- Education, Medical2
