@book{30982,
	author = {Furth, Hans G.},
	title = {Las ideas de Piaget :},
	publisher = {Kapelusz,},
	year = {1974.},
	series = {Biblioteca de cultura pedagógica ;},
	address = {Buenos Aires :},
	edition = {1a ed., 2a reimpr.},
	note = {Con vocabulario p.171-176.}
}