@book{32909,
	author = {RÁngel Nafaile, Carlos E.},
	title = {Los materiales de la civilización / },
	publisher = {Fondo de Cultura Económica, },
	year = {2003.},
	series = {La ciencia para todos ; no. 29},
	address = {México : },
	edition = {3a. ed.}
}