File:Penn caseyville 2-5.jpg: Revision history

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24 July 2018

  • curprev 15:5015:50, 24 July 2018Jennifer.Obrad talk contribs 166 bytes +166 Figure 2-5. Map showing where the Caseyville Formation crops out in Illinois and where the formation has been identified in the subsurface. Map drafted by Alan Myers.