@book{7920,
	author = {GUTIERREZ BARBA, BLANCA E. and HERRERA COLMENERO, NORMA I.},
	title = {LA INGENIERIA AMBIENTAL EN MEXICO/ },
	publisher = {LIMUSA},
	year = {\\\\},
	address = {MEXICO: },
	note = {BIBLIOGRAFIA: P. 87-89.}
}