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Subjects
- United States87
- Child29
- Family Planning Services28
- Infant21
- Contraception16
- History, 19th Century14
- History, 20th Century14
- Radiography13
- Tropical Medicine13
- Brain -- physiology12
- Military Medicine12
- Oral Hygiene12
- Adolescent11
- National Library of Medicine (U.S.)11
- Malaria -- prevention & control10
- Military Personnel10
- Communicable Disease Control9
- Dental Care9
- Leprosy -- complications9
- Libraries, Medical -- history9