@book{453,
	author = {Petrosino, Jorge. },
	title = {¿Cuánto duran los aprendizajes adquiridos? : },
	publisher = {Novedades Educativas, },
	year = {2000.},
	series = {Educación con jóvenes},
	address = {Buenos Aires : },
	edition = {1a. ed.}
}