{"id":"001548465","type":"book","title":"Environmental change in the southeastern Sahara and the proposal of a geo-biosphere reserve in the Wadi Howar area (NW Sudan)","publisher":"Balkema","publisher-place":"Rotterdam [et al","pages":"561-568","container-title":"Geoscientific research in Northeast Africa : proceedings of the International Conference on Geoscientific Research in Northeast Africa, Berlin, Germany, 17 - 19 June 1993, 1993","author":[{"family":"Kröpelin","given":"Stefan."}],"issued":{"raw":"1993"}}