{"id":"000028313","type":"book","title":"Rate of advance of the Woodfordian (Late Wisconsinan) glacial margin in Illinois: stratigraphic and radiocarbon evidence. - Boulder, CO","container-title":"Bulletin of the Geological Society of America ; 82.1971, S. 3245-3250 : 5 Ill","author":[{"family":"Kempton","given":"John P."}],"issued":{"raw":"1971"}}