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Subjects
- Nurses21
- United States18
- World War I17
- Military Personnel15
- Australia12
- France12
- Physicians9
- Hookworm Infections8
- Public Health7
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- Czech Republic6
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- American National Red Cross.5
- Schools, Medical5
- Ambulances -- history4
- American Field Service.4
- Child Care4
- Hospitals, Military4
- Nonprescription Drugs4