@book{746,
	author = {Arzeno, Mariana B. and Carroza, Wilfredo.},
	title = {Ciencias Sociales 9 /},
	publisher = {Santillana,},
	year = {2006.},
	series = {Todos protagonistas},
	address = {Buenos Aires :},
	edition = {1ª ed.},
	note = {EGB 9 año.}
}