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Communicable Disease Control
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8
Cholera -- prevention & control
2
Midwestern United States
2
Burial -- legislation & jurisprudence
1
California
1
Disinfection
1
Disinfection -- methods
1
Michigan
1
New Orleans
1
New York City
1
Quarantine
1
Sanitary Council of the Mississippi Valley.
1
Sanitation
1
Schools
1
Ships
1