@book{26237,
	author = {Gallego Badillo, Rómulo},
	title = {Discurso sobre constructivismo :},
	publisher = { Cooperatova Editorial Magisterio},
	series = {Mesa redonda ; 44},
	address = {Santafe de Bogota :},
	edition = {segunda  edición.},
	note = {1 copia sala}
}