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Subjects
- United States88
- Nurses57
- World War I53
- Hygiene45
- Public Health34
- Hookworm Infections32
- Military Personnel27
- Physicians25
- Military Medicine24
- Tuberculosis24
- Brazil21
- Yellow Fever21
- France20
- General Surgery20
- Sanitation20
- Orthopedics19
- United States. Army. American Expeditionary Forces.19
- United States. Army. Medical Department.19
- Child Care18
- Combat Disorders18