@book{139449,
	author = {University of Maryland, College Park.},
	title = {Construcción de material didáctico para la enseñanza de ciencias /},
	publisher = {Editorial Guadalupe,},
	year = {c1976-77.},
	series = {Biblioteca Pedagogica},
	address = {Buenos Aires:},
	note = {Translation of : Guidebook to constructing inexpensive science teaching equipment.}
}