{"id":"000028312","type":"book","title":"Radiocarbon dates from Altonian and Twocreekan deposits at Sycamore, Illinois. - Springfield, IL","container-title":"Transactions of the Illinois State Academy of Science ; 59.1966, no. 1, S. 39-42 : 2 Ill","author":[{"family":"Kempton","given":"John P."}],"issued":{"raw":"1966"}}