2020-04-242020-04-241985-03-12Tanzania joins PTA (1985, April 12). Daily News, pp.1http://41.86.178.5:8080/xmlui/handle/123456789/10041Available in print form, East Africana Collection, Dr. Wilbert Chagula Library, Newspaper Collection.President Nyerere yesterday signed the Preferential Trade Area(PTA) agreement for Eastern and Southern African states marking Tanzanian's formal entry into the four-years-old organisation which was formed with the objective of creating a common market for the the region.enPresident NyererePreferential Trade Area(PTA)Eastern and Southern African statesOther