@book{7172,
	author = {Echegaray de Juárez, Elena M},
	title = {Estudio dirigido 2 :},
	publisher = {Kapelusz,},
	year = {1972.},
	series = {Cuadernos pedagógicos ;},
	address = {Buenos Aires :},
	edition = {la ed.},
	note = {p.46.}
}