@Book{RANME20161214252, title = "Jenner y la vacuna : conferencia hist\'{o}rica", author = "Sierra Carb\'{o}, Antonio", publisher = "Madrid : Velasco y Romero", editor = "Velasco y Romero", URL = "http://bibliotecavirtual.ranm.es/ranm/es/consulta/registro.do?id=23425", year = "1877", }