@book{16918,
	author = {American Society of Agronomy. Symposium and Crop Science Society of America. CSSA. },
	title = {Organic farming: current technology and its role in a sustainable agriculture :},
	publisher = {American Society of Agronomy :},
	year = {1984.},
	series = {ASA special publication ;},
	address = {Madison, WI :}
}