@book{51289,
	author = {Steward, Julian Haynes,},
	title = {Las civilizaciones antiguas del viejo mundo y de América /},
	publisher = {Oficina de Ciencias Sociales, Departamento de Asuntos Culturales, Unión Panamericana,},
	year = {1955.},
	series = {Estudios monográficos,},
	address = {Wáshington :},
	note = {Issued also in English.}
}