@book{5149,
	author = {Tietenberg, Thomas H. and Lewis, Lynne.},
	title = {Environmental & natural resource economics /},
	publisher = {Pearson Addison Wesley,},
	year = {c2009.},
	address = {Boston :},
	edition = {8th ed.},
	url = {http://www.loc.gov/catdir/toc/ecip0820/2008025885.html}
}