Subjects
- Mexico1
- Michigan8
- Military Medicine -- methods1
- Ontario1
- Peru1
- Physician's Role2
- Public Facilities1
- Public Health1
- Public Health Administration1
- Puerto Rico1
- Quarantine3
- Quarantine -- legislation & jurisprudence1
- Quarantine -- organization & administration1
- Railroads1
- Sanitation2
- Scarlet Fever -- epidemiology1
- Scarlet Fever -- prevention & control2
- Schools1
- Ships2
- Skin Diseases1