@book{6089,
	author = {Sawyer, Clair N. and McCarty, Perry L.},
	title = {Chemistry for environmental engineering. /},
	publisher = {McGraw-Hill,},
	year = {c1994.},
	series = {The McGraw-Hill series in civil and environmental engineering.},
	address = {New York :},
	edition = {4th ed.}
}