@book{72578,
	author = {Sawyer, Clair N. and McCarty, Perry L.},
	title = {Chemistry for environmental engineering and science /},
	publisher = {McGraw-Hill,},
	year = {2003.},
	address = {Boston :},
	edition = {5th ed.},
	url = {http://www.loc.gov/catdir/description/mh024/2002025494.html}
}