TY - BOOK T1 - Paleogeologic map of the sub-Pennsylvanian Chesterian (upper Mississippian) surface in the Illinois basin DA - 1971. CY - Urbana, AU - Bristol, Hubert M. AU - Howard, Richard Henry, VL - 458 CN - QE105 CN - QE105 PB - Illinois State Geological Survey, PP - Urbana, PY - 1971. N1 - Cover title. N1 - "Prepared in cooperation with the Indiana Geological Survey, Bloomington and the Kentucky Geological Survey, Lexington." N1 - Part of illustrative matter in pocket. ID - 110925 KW - Geology, Stratigraphic KW - Geology TI - Paleogeologic map of the sub-Pennsylvanian Chesterian (upper Mississippian) surface in the Illinois basin ER -