@book{331907,
	author = {Metcalf & Eddy. and Tchobanoglous, George.},
	title = {Wastewater engineering :},
	publisher = {McGraw-Hill,},
	year = {c1981.},
	series = {McGraw-Hill series in water resources and environmental engineering},
	address = {New York :},
	note = {H.B}
}