@book{73156,
	author = {Gigon, Olof and Carrión Gútiez, Manuel.},
	title = {Los orígenes de la filosofía griega},
	publisher = {Editorial Gredos},
	year = {1971.},
	series = {Biblioteca hispánica de filosofía ; 67},
	address = {Madrid},
	note = {Translation of Der ursprung der griechischen philosophie, 1968, 2. ed.}
}