@book{40374,
	author = {Rahman, Sanzidur and Sriboonchitta, Songsak},
	title = {Joint determination of demand for inputs and choice of rice varieties :},
	publisher = {Multiple Cropping Centre, Faculty of Agriculture, Chiang Mai University,},
	year = {c1993},
	address = {Chiang Mai, Thailand :},
	note = {"July 1993."}
}