title: [A social history of the frontier nursing service: 1. Mary Breckinridge and the Frontier Nursing Service].
authors.forename: N
authors.initials: N
authors.lastname: Dammann
mesh_terms: D049673:History, 20th Century; D007629:Kentucky; D008427:Maternal Health Services / Q000266:history*; D009721:Nurse Midwives / Q000266:history*