@book{74831,
	author = {Seiler-Hausmann, Jan-Dirk. and ebrary, Inc.},
	title = {Eco-efficiency and beyond},
	publisher = {Greenleaf Pub.,},
	year = {2004.},
	address = {Sheffield, South Yorkshire, England :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10650156}
}