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Subjects
- Labor Presentation1
- Libraries, Medical -- history1
- National Library of Medicine (U.S.). History of Medicine Division1
- Nursing1
- Obstetric Labor Complications1
- Operating Tables1
- Peru1
- Photography -- history1
- Physical Examination1
- Physician's Role -- history1
- Physician-Patient Relations1
- Physicians1
- Postcards as Topic1
- Posture1
- Surgical Instruments1
- Syphilis1
- United States1