@book{49659,
	author = {Dresner, Simon},
	title = {The principles of sustainability /},
	publisher = {Earthscan,},
	year = {2008},
	address = {London ;},
	edition = {2nd ed.},
	note = {Rev. ed. of: The principles of sustainability. 2002},
	url = {http://www.loc.gov/catdir/toc/ecip0817/2008019748.html}
}