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Subjects
- Nutritional Physiological Phenomena1
- Occupational Diseases -- prevention & control1
- Occupational Health -- economics1
- Oral Hygiene2
- Orthodontics, Corrective1
- Sexually Transmitted Diseases -- prevention & control1
- Syphilis -- prevention & control1
- Tuberculosis -- epidemiology1
- Tuberculosis -- prevention & control1
- United States2
- World War II2