@book{49883,
	author = {Asimov, Isaac },
	title = {Fundación y tierra / },
	publisher = {Plaza & Janés Editores, },
	year = {2000.},
	series = {Jet Biblioteca de Isaac Asimov},
	address = {Barcelona : },
	edition = {6a ed.},
	note = {Volver a los orígenes}
}