@book{223605,
	author = {Schr�oder, P. and ebrary, Inc.},
	title = {Perspectives for agroecosystem management},
	publisher = {Elsevier,},
	year = {c2008.},
	address = {Amsterdam :},
	edition = {1st ed.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10204228}
}