@book{67611,
	author = {Cabezas Olmo, Encarnación,},
	title = {La tierra, un debate interminable :},
	publisher = {Prensas Universitarias de Zaragoza,},
	year = {2002.},
	series = {El Aleph ;},
	address = {Zaragoza :},
	edition = {1a. ed.},
	url = {https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/6328/}
}