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Subjects
- World War I17
- United States15
- France8
- Military Personnel6
- Hospitals, Military5
- Military Medicine5
- Sexual Behavior4
- Ambulances3
- Chemistry3
- Contraception3
- Disabled Persons -- rehabilitation3
- Hygiene3
- Military Hygiene3
- Military Nursing3
- United Kingdom3
- Volunteers3
- American National Red Cross.2
- Belgium2
- Brazil2
- Chemical Phenomena2