@book{90380,
	author = {Lengelle, Maurice. and Moragas, Elvira.},
	title = {La esclavitud / },
	publisher = {Oikos-Tau, },
	year = {[1971]},
	series = {¿Qué sé? ; },
	address = {Barcelona, etc. : },
	edition = {[1ª ed.].}
}