@book{144286,
	author = {Piaget, Jean, and Szeminska, Alina, Joint author.},
	title = {Génesis del número en el niño},
	publisher = {Editorial Guadalupe},
	year = {c1987.},
	series = {Biblioteca Pedagogica},
	address = {Buenos Aires},
	edition = {7a ed.},
	note = {Translation of: La genése du nombre chez l'enfant.}
}