Zakaria Lasemi ... [and others] ; contributors, Garland R. Dever, Jr., Terry Teitloff, Richard D. Harvey ; sponsored by the Illinois Geological Society and the Illinois State Geological Survey
John H. Bullock, Jr... [and others] ; prepared in cooperation with the Kentucky Geological Survey, the Geological Survey Division of the Illinois Department of Energy and Natural Resources, and the Missouri Division of Geology and Land Survey
Date
1991
Series
U.S. Geological Survey open-file report ; 91-637-A