{"id":"000028835","type":"book","title":"The late-altonian (Wisconsinan) glacial sequence in northern Illinois. - Springfield, IL","container-title":"International Association for Quaternary Research <8, Boulder-CO> : international congress ; proceedings ; 7. 1968, S. 535-546 : 3 Ill","author":[{"family":"Kempton","given":"John P."}],"issued":{"raw":"1968"}}