@Book{BDG201890893141, title = "Die zucht edler silberf\"{u}chse : mit einem anhang Die Marderzucht", author = "Ley, a", publisher = "Berlin : Paul Parey", editor = "Paul Parey", URL = "http://biblioteca.galiciana.gal/es/consulta/registro.do?id=473423", year = "1926", }