@book{5623,
	author = {Botkin, Daniel B. and Keller, Edward A.,},
	title = {Environmental science :},
	publisher = {Wiley,},
	year = {c2003.},
	address = {New York :},
	edition = {4th ed.},
	url = {http://www.loc.gov/catdir/description/wiley035/2002728305.html}
}