@book{258829,
	author = {United States.},
	title = {The Economic evolution of agriculture :},
	publisher = {U.S. Government Printing Office,},
	year = {1985.},
	series = {S. prt. ;},
	address = {Washington :},
	note = {At head of title: 98th Congress, 2d session. Joint committee print.},
	url = {http://purl.fdlp.gov/GPO/gpo78749}
}