@book{7331,
	author = {CUNNINGHAM, WILLIAM P. and SAIGO, BARBARA WOODWORTH.},
	title = {ENVIRONMENTAL SCIENCE : },
	publisher = {MCGRAW-HILL},
	year = {\\\\},
	address = {BOSTON ; MEXICO: },
	edition = {5},
	note = {INCLUYE BIBLIOGRAFIAS E INDICE.}
}