Yang, Yongzheng Regional trade arrangements in Africa : past performance and the way forward / Yongzheng Yang & Sanjeev Gupta - Washington, D.C. : International Monetary Fund (IMF) , 2005 - 44p. : ill. ; 26 cm. - IMF Working Paper No. 05-36 . Includes bibliographical references Subjects--Topical Terms: Regional trade--Africa Gov. Doc. Class. No.: UN IMF Wp-05-36