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Subjects
- Emigrants and Immigrants[remove]17
- Communicable Disease Control4
- New York City4
- United States4
- Ships3
- California2
- China2
- Quarantine2
- American Civil War1
- Anniversaries and Special Events1
- Asian Americans1
- Canada -- epidemiology1
- Cholera -- epidemiology1
- Cholera -- prevention & control1
- Communicable Disease Control -- legislation & jurisprudence1
- Communicable Diseases1
- Cuba1
- Disease Transmission, Infectious1
- Eugenics1
- Federal Government1