@book{172329,
	author = {Boule, Francois.},
	title = {Manipular, organizar, representar},
	publisher = {Narcea},
	year = {1995.},
	series = {Colección Primeros años},
	address = {Madrid},
	note = {Translation of: Manipuler, organiser, représenter. Prélude aux mathématiques.}
}