@book{11684,
	author = {Marchand, Helena Maria D'Orey and INHELDER, Bärbel},
	title = {Apprentissage operatoire},
	publisher = {Instituto Nacional de Investigação Científica},
	year = {1991},
	series = {Psicologia},
	address = {Lisboa},
	edition = {1ª ed. }
}