@book{17,
	author = {Fritsch, Rudolf and Gerwing, Martin},
	title = {Ecografía de Perros y Gatos.},
	publisher = {Editorial Acribia S.A,},
	year = {1996.},
	address = {Zaragoza :},
	note = {El Ejemplar No 3 Pertenece a Reserva de la Central.}
}