@book{9401,
	author = {Hassan, Rashid M. and Faki, Hamid.},
	title = {Economic policy and technology determinants of the comparative advantage of wheat production in Sudan},
	publisher = {Centro Internacional de Mejoramiento de Maíz y Trigo,},
	year = {1993},
	series = {Economic paper},
	address = {Bangkok, Thailand :}
}