@book{8372,
	author = {Wardle, Terry and Jacques, Benoit,},
	title = {La suma más difícil del mundo /},
	publisher = {Ediciones SM, },
	year = {1992.},
	series = {El barco de vapor ;},
	address = {Madrid :},
	edition = {4a. ed.},
	note = {A partir de 9 años}
}