{"id":"000027055","type":"book","title":"Radiocarbon dating of east african lake levels : new observations provide fresh insights into late Quaternary paleoclimates. - Washington, D.C","container-title":"Science ; 175.1972, no. 4027, S. 1069-1076 : 2 Ill. ; 2 Kt. ; 2 Tab","author":[{"family":"Butzer","given":"Karl W."}],"issued":{"raw":"1972"}}