@book{3938,
	author = {METCALF & EDDY, INC. (USA). and TCHOBANOGLOUS, GEORGE.},
	title = {WASTEWATER ENGINEERING : },
	publisher = {MCGRAW-HILL},
	year = {1981},
	series = {MCGRAW-HILL SERIES IN WATER RESOURCES AND  ENVIROMENTAL ENGINNERING},
	address = {NEW YORK: },
	note = {INCLUYE INDICE.}
}