@book{2684,
	author = {Dearden, Philip. and Mitchell, Bruce,},
	title = {Environmental change and challenge :},
	publisher = {Oxford University Press,},
	year = {2005 },
	address = {Toronto},
	edition = {2nd ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy0606/98131570-d.html}
}