@book{1174,
	author = {Puerto de Palos.},
	title = {Ciencias Sociales 9 :},
	publisher = {Puerto de Palos,},
	year = {2001.},
	series = {Activa},
	address = {Buenos Aires :},
	edition = {1ª ed.},
	note = {Incluye carpeta de actividades.}
}