@book{20739,
	author = {Inhelder, Bärbel; and Bovet, Magali},
	title = {Learning and the development of cognition /},
	publisher = {Routledge and Kegan Paul,},
	year = {1974.},
	address = {London :},
	note = {Translation of Apprentissage et structures de la connaissance.}
}