@Book{RANME20161153193, title = "La natalit\'{e} en France", author = "Chervin, Arthur, 1850-1921", publisher = "Paris : Typographie A. Hennuyer", editor = "Typographie A. Hennuyer", URL = "http://bibliotecavirtual.ranm.es/ranm/es/consulta/registro.do?id=17319", year = "1888", }