@book{36881,
	author = {Nelson, Clarence H.},
	title = {Mediciones y evaluacion en el aula /},
	publisher = {Kapelusz,},
	year = {1971.},
	series = {Colección de Pedagogia Practica},
	address = {Buenos Aires :},
	note = {Titulo de la edicion original: Measurement and evaluation in the classroom.}
}