2020-03-312020-03-311985-04-13Tanzania signed the preferential trade area agreement for Eastern and Southern African states (1985,April 13) Daily News.pp.5http://41.86.178.5:8080/xmlui/handle/123456789/8602Available in print form, East Africana Collection, Dr. Wilbert Chagula Library. News paper collection.Tanzania signed the Preferential Trade Area(PTA) agreement for Eastern and Southern African State on Thursday.PTA was formed with the objective of creating a common market for the region.enPreferential Trade Area(PTA)Dar es SalaamZimbabweDr.Richard HoveImage