@book{5094,
	author = {Collion, Marie-Helene. and Servicio Internacional para la Investigación Agrícola Nacional.},
	title = {An approach to long-term program design},
	publisher = {International Service for National Agricultural Research,},
	year = {1991},
	series = {Working paper},
	address = {The Hague :},
	note = {56-32}
}