@book{6134,
	author = {Ball, Robert S. and Verneuil, Enrique L. de},
	title = {La Historia de los cielos :},
	publisher = {Establ. tip. editorial de Ramón Molinas,},
	year = {[1878?]},
	series = {Biblioteca de La ilustración ibérica},
	address = {Barcelona :},
	url = {http://bipadiub.contentdm.oclc.org/digital/collection/astronomia/id/56113}
}