@book{185105,
	author = {National Research Council (U.S.).},
	title = {Toward sustainable agricultural systems in the 21st century},
	publisher = {National Academies Press,},
	year = {c2010.},
	address = {Washington, D.C. :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10405119}
}