{"id":"000335794","type":"book","title":"Holocene evolution of climate and environment, and stone city ruins in northern Darfur, Sudan. Is there a relationship? -","pages":"381-397","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":"Dumont","given":"H.J."}]}