@book{273864,
	author = {United States.},
	title = {Conservation reserve program.},
	publisher = {Agricultural Stabilization and Conservation Service, U.S. Dept. of Agriculture,},
	year = {[197u-197u]},
	series = {ASCS background information BI (series) ;},
	address = {[Washington, D.C.] :},
	note = {4to.}
}