@book{168643,
	author = {Gardner, Bruce L. and ebrary, Inc.},
	title = {American agriculture in the twentieth century},
	publisher = {Harvard University Press,},
	year = {[2006]},
	address = {Cambridge, MA :},
	note = {Originally published: 2002.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10318371}
}