{"id":"000335797","type":"book","title":"Environmental change and the development of nomadism in the east-central Sudan","pages":"421-430","container-title":"Environmental change and human culture in the Nile Basin and Northern Africa until the second millennium B.C. Proceedings of the international symposium, Dymaczewo near Poznań 5-10 September 1988","author":[{"family":"Sadr","given":"K."}]}