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Subjects
- United States184
- World War I140
- Hygiene63
- France50
- Military Medicine47
- Hospitals, Military43
- Military Personnel42
- Sex Education33
- New York30
- Sexual Behavior29
- Nonprescription Drugs28
- Child27
- Pennsylvania27
- Tuberculosis, Pulmonary25
- Physicians24
- Military Hygiene23
- New York City23
- Tuberculosis, Pulmonary -- prevention & control23
- American National Red Cross.22
- Relief Work22