@book{1335,
	author = {Ostrovsky, Graciela. and Grinschpun, Mónica.},
	title = {Ciencias Naturales 7 /},
	publisher = {Kapelusz,},
	year = {2000.},
	series = {Nuevos enfoques},
	address = {Buenos Aires :},
	edition = {1ª ed.}
}