@book{779,
	author = {Kahn, James R.},
	title = {The economic approach to environmental and natural resources /},
	publisher = {Dryden Press,},
	year = {c1998.},
	series = {The Dryden Press series in economics, },
	address = {Fort Worth :},
	edition = {2nd ed.},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/enhancements/fy1505/97066400-t.html}
}