@Book{RANME20161389707, title = "Ecograf\'{\i}a en obstetricia", author = "LEROY, Bernard", publisher = "Barcelona : Toray-Masson", ISBN = "ISBN 8431102829", editor = "Toray-Masson", series = "(Medicina ultrasonora)", URL = "http://bibliotecavirtual.ranm.es/ranm/es/consulta/registro.do?id=40970", year = "1981", }