@book{172981,
	author = {Blaney, Rosemarie B.},
	title = {Cómo enseñar las nuevas matemáticas en las escuelas elementales},
	publisher = {Unión Tipográfica Editorial Hispano Americana},
	year = {c1968},
	series = {Manual UTEHA breve},
	address = {México},
	note = {Translation of teaching new mathematics in the elementary schools.}
}