Bedrock geology of the Paducah 1nx2n CUSMAP Quadrangle, Illinois, Indiana, Kentucky, and Missouri - Nelson, W. John. (Washington Denver, CO U.S. G.P.O. For sale by U.S. Geological Survey, Information Services, 1998)
"A joint study conducted in collaboration with the Illinois State Geological Survey ... [et al.]."
One folded col. map in pocket.
Includes bibliographical references (p. 31-36).
Keywords: Geology -- Middle West