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Subjects
- United States119
- Public Health -- legislation & jurisprudence109
- American Civil War52
- Public Health49
- Sanitation -- legislation & jurisprudence43
- Military Personnel41
- New York41
- United States. Army41
- Public Health Administration -- legislation & jurisprudence40
- Massachusetts34
- Mexico29
- Quarantine -- legislation & jurisprudence28
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- Communicable Disease Control -- legislation & jurisprudence26
- Boston22
- Illinois22
- Legislation, Medical20
- Public Health Administration20
- Sanitation18
- Pennsylvania16
