@book{14154,
	author = {United Nations Educational, Scientific and Cultural Organization. Oficina Regional de Ciencia y Tecnología para América Latina y el Caribe and Seminario},
	title = {Enseñanza integrada de las ciencias en Amércia Latina},
	publisher = {United Nations Educational, Scientific and Cultural Organization, },
	year = {1976.},
	address = {Montevideo : }
}