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Subjects
- African Americans[remove]181
- Nurse Midwives45
- National Library of Medicine (U.S.). Reference Services Division.29
- Library Materials17
- Microfilming17
- Libraries, Medical16
- Nurses15
- National Library of Medicine (U.S.)14
- Child10
- Laboratory Personnel6
- Library Automation6
- Library Technical Services6
- National Library of Medicine (U.S.). Index Section.6
- United States. Public Health Service.6
- Catalogs, Library4
- Infant4
- Physicians4
- Hospitals, Military3
- Librarians3
- Aged2