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Subjects
- United States239
- World War I144
- Hygiene119
- Hospitals, Military61
- Medicine59
- Military Medicine53
- France52
- Sexual Behavior51
- New York49
- Military Personnel47
- Physiological Phenomena47
- Physicians42
- New York City36
- Nonprescription Drugs36
- Sex Education36
- Health Behavior34
- Sanitation34
- Military Hygiene30
- Pennsylvania30
- Diet29
