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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).
- 16:54, 8 March 2016 Jennifer.Obrad talk contribs uploaded File:Penn carb fig1.jpg (Chart Showing the Development of the Stratigraphic Classification of the Pennsylvanian System in the Illinois Basin. Compiled by the Tri-State Committee on Correlation of the Pennsylvanian System in the Illinois Basion, 2001.)