@book{10627,
	author = {Field, Barry C and Field, Martha K.},
	title = {Environmental Economics :},
	publisher = {McGraw-Hill/Irwin,},
	year = {2002.},
	address = {New York, N.Y. :},
	edition = {3rd ed.},
	url = {http://www.loc.gov/catdir/description/mh021/2001030662.html}
}