Amjadi, Azita Did external barriers cause the marginalization of Sub-Saharan Africa in world trade? by Azita Amjadi, Ulrich Reincke and Alexander J. Yeats - Washington, D.C. The World Bank 1996 - 151p. - World Bank discussion paper; no. 348 . Subjects--Topical Terms: Tranportation - Africa, Sub-Saharan - CostsTariff - Africa, Sub-SaharanExports - Africa, Sub-SaharanAfrica, Sub-Saharan - Commerce Dewey Class. No.: T3x67 Am57