@book{8256,
	author = {Heller, Agnes and Yvars, J. F.},
	title = {Teoría de las necesidades en Marx /},
	editor = {(Gráf. Alfonso)},
	publisher = {Península,},
	year = {1978},
	series = {Historia, ciencia, sociedad ;},
	address = {Barcelona :},
	note = {Reimpressions: 1986, 1998}
}