@book{529190,
	author = {Masters, Gilbert M. and Ela, Wendell.},
	title = {Introduction to environmental engineering and science /},
	publisher = {Prentice Hall,},
	year = {c2008.},
	address = {New Delhi :},
	edition = {3rd ed.},
	url = {http://www.loc.gov/catdir/toc/ecip0717/2007019018.html}
}