@book{16917,
	author = {Kimball, Bruce A. and American Society of Agronomy. ASA. },
	title = {Impact of carbon dioxie, trace gases, and climate change on global agriculture :},
	publisher = {American Society of Agronomy :},
	year = {1990.},
	series = {ASA special publication ;},
	address = {Madison, WI :}
}