@Book{CYL20090044562, title = "El Duque de Piedra : novela original", author = "Coloma, Jes\'{u}s R., n. 1874", publisher = "Madrid : Patronato Social de Buenas Lecturas", editor = "Patronato Social de Buenas Lecturas", series = "(Biblioteca patria de obras premiadas ; 259)", URL = "https://bibliotecadigital.jcyl.es/es/consulta/registro.do?id=5794", year = "19uu", }