Akiyama, Takamasa The adding-up problem : strategies for primary commodity exports in Sub-Saharan Africa / Takamasa Akiyama & Donald F Larson - Washington : World Bank (WB) , 1994 - 41p. : ill. ; 28 cm. - Policy Research Working Paper 1245 . Includes bibliographical references. Subjects--Topical Terms: Exports--AfricaCommodities--Africa Gov. Doc. Class. No.: UN WB PRWP-1245