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Combined display of all available logs of ILSTRAT. You can narrow down the view by selecting a log type, the username (case-sensitive), or the affected page (also case-sensitive).
- 16:10, 23 July 2018 Jennifer.Obrad talk contribs uploaded File:Penn caseyville 2-5.jpg (Figure 2-5. Map showing where the Caseyville Formation crops out in Illinois and where the formation has been identified in the subsurface.)