@book{1554,
	author = {Callan, Scott. and Thomas, Janet M.},
	title = {Environmental economics & management :},
	publisher = {AIPI,},
	year = {c2007.},
	address = {Mason, Ohio :},
	edition = {3rd ed.},
	url = {http://www.loc.gov/catdir/toc/fy036/2002116031.html}
}