@book{16942,
	author = {Usherwood, Noble R. and American Society of Agronomy. ASA. },
	title = {Transferring technology for small-scale farming.},
	publisher = {American Society of Agronomy,},
	year = {1981(Reimp.1985)},
	series = {ASA special publication ;},
	address = {Madison, WI :},
	note = {Proceedings of a symposium .. Chicago,Il. 3-8 Dec. 1978.}
}