@Book{RANME20161505770, title = "A new concept for undergraduate education in obstetrics and gynecology", author = "LOCK, Frank R", publisher = "St. Louis : C. V. Mosby Company", editor = "C. V. Mosby Company", URL = "http://bibliotecavirtual.ranm.es/ranm/es/consulta/registro.do?id=52577", year = "1952", }