Books by Jennie L. Ridgley:
Books in the extended shelves:
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Ridgley, Jennie L.: Proceedings of the Illinois Basin Energy and Mineral Resources Workshop, September 12-13, 1994, Evansville, Indiana (U.S. Geological Survey, 1994), also by Ind.) Illinois Basin Energy and Mineral Resources Workshop (1994 : Evansville, Illinois Basin Consortium, and Geological Survey (U.S.) (page images at HathiTrust)- Ridgley, Jennie L.: Source rock potential of the lower part of the Mississippian St. Louis limestone in south-central Indiana (United States Government Printing Office ;, 1995), also by Vito F. Nuccio (page images at HathiTrust)
Find more by Jennie L. Ridgley at your library, or elsewhere.