@book{39671,
	author = {Davis, Mackenzie Leo and Masten, Susan J.},
	title = {Principles of environmental engineering and science /},
	publisher = {McGraw-Hill Higher Education,},
	year = {c2009},
	address = {Boston :},
	edition = {2nd ed.},
	url = {http://www.loc.gov/catdir/toc/ecip0727/2007038644.html}
}