@book{2383,
	author = {Piaget, Jean, and Szeminska, Alina, Joint author.},
	title = {Génesis del número en el niño},
	publisher = {Editorial Guadalupe},
	year = {1975.},
	series = {Biblioteca Pedagogica},
	address = {Buenos Aires},
	edition = {4 ed.},
	note = {Translation of: La genése du nombre chez l'enfant.}
}