@book{7432,
	author = {Wells, M.E.},
	title = {Un programa desarrollado en proyectos},
	publisher = {Losada},
	year = {1966},
	series = {La escuela activa},
	address = {Buenos Aires},
	edition = {5ª ed.},
	note = {Nota preliminar por F. Sáinz}
}