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Subjects
- United States24
- World War I23
- Military Medicine19
- United States. Army. Medical Department.18
- Combat Disorders17
- General Surgery17
- Hospital, Military17
- Military Hygiene17
- Orthopedics17
- United States. Army. American Expeditionary Forces.17
- Europe4
- Military Personnel3
- Sex Education3
- Canada2
- Egypt2
- Enzymes2
- France2
- Genes2
- Hospitals, Special2
- Men2