{"id":"001405759","type":"book","title":"The Eastern Sahara from North to South","pages":"197-203","container-title":"Late prehistory of the Nile Basin and the Sahara. [Proceedings of the international symposium, Poznań 11 - 15 September 1984","author":[{"family":"Kuper","given":"Rudolph"}],"issued":{"raw":"1989"}}