@book{153196,
	author = {Wojtkowski, Paul A. and ebrary, Inc.},
	title = {Agroecological economics},
	publisher = {Academic,},
	year = {2008.},
	address = {Boston ;},
	edition = {1st ed.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10229499}
}