Author
Illinois State Geological Survey
Berg, Richard C.
1
Curry, B. B.
1
Fullerton, David S.
1
Geological Survey (U.S.)
1
Killey, Myrna M.
1
Lasemi, Zakaria
1
Lineback, Jerry A.
1
Norby, Rodney D.
1
Richmond, Gerald Martin, 1914-
1
Tri-State Geological Field Conference
1
Tri-State Geological Field Conference East Saint Louis, Ill.)
1
Troost, Kathy G.
1