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Subjects
- United States181
- World War I138
- Hygiene50
- France48
- Military Medicine47
- Military Personnel43
- Hospitals, Military42
- New York33
- Nonprescription Drugs33
- Sex Education31
- Pennsylvania28
- Sexual Behavior28
- Tuberculosis, Pulmonary25
- New York City24
- American National Red Cross.22
- General Surgery22
- Military Hygiene22
- Physicians22
- Relief Work22
- United States. Army. Medical Department.22