@book{43648,
	author = {Franch, José Alcina },
	title = {Las claves de la América precolombina 30000 a.C.- 1492 /},
	publisher = {Planeta,},
	year = {1991},
	series = {Las Claves de la Historia},
	address = {Barcelona, España :},
	edition = {1a ed.}
}