@book{49494,
	author = {Cramer, Gail L. and Jensen, Clarence W.},
	title = {Agricultural economics and agribusiness /},
	publisher = {John Wiley,},
	year = {c2001.},
	address = {New York :},
	edition = {8th ed.},
	url = {http://www.loc.gov/catdir/toc/onix06/00043401.html}
}