[059-07] Radiocarbon Dates from Altonian and Twocreekan Deposits at Sycamore, Illinois
Kempton, John P. Radiocarbon Dates from Altonian and Twocreekan Deposits at Sycamore, Illinois 059-07-print
Kempton, John P. Radiocarbon Dates from Altonian and Twocreekan Deposits at Sycamore, Illinois 059-07-print