@book{254060,
	author = {Villagrá, María del Rosario and Villagrá, Ana},
	title = {Atlas básico de matemáticas /},
	publisher = {Parramón Ediciones,},
	year = {2007.},
	address = {Barcelona :},
	edition = {Octava edición},
	note = {Translation of : Elements de'histoire des matematiques.}
}