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Creator
- Wayne, William J. (William John), 1922-[remove]5
- Indiana. Geological Survey3
- Illinois State Geological Survey2
- Atherton, Elwood, 1909-1
- Burger, Ann M.1
- Forsyth, Jane L. (Jane Louise), 1921-1
- Gray, Henry Hamilton, 1922-1
- Guennel, G. K.1
- Johnson, Gerald H.1
- Keller, Stanley J.1
- Murray, Haydn H. (Haydn Herbert), 1924-1
- Nicoll, Robert S.1
- Patton, John B. (John Barratt), 1915-1
- Smith, Ned M. (Ned Myron)1
- Wier, Charles E. (Charles Eugene), 1921-1