@book{1603,
	author = {Sawyer, Clair N. and McCarty, Perry L.},
	title = {Chemistry for environmental engineering.},
	publisher = {McGraw-Hill,},
	year = {c1994.},
	address = {New York :},
	edition = {4th ed. /},
	url = {http://www.loc.gov/catdir/description/mh022/94000261.html}
}