@book{13283,
	author = {Costanza, Robert},
	title = {Handbook of ecological indicators for assessment of ecosystem health /},
	publisher = {Taylor & Francis,},
	year = {c2005},
	address = {Boca Raton :},
	url = {http://www.loc.gov/catdir/enhancements/fy0646/2004015982-d.html}
}