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Subjects
- United States78
- World War I45
- Hygiene40
- Military Medicine21
- Sanitation20
- General Surgery18
- Health Surveys18
- Orthopedics18
- United States. Army. American Expeditionary Forces.18
- Combat Disorders17
- Hospital, Military17
- Military Hygiene17
- United States. Army. Medical Department.17
- Vital Statistics17
- Water Supply16
- Physiological Phenomena15
- Sex Education15
- Sexual Behavior15
- France13
- Sewage13