File:Penn carbondale 4-1.jpg: Difference between revisions
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|Caption=Figure 4-1. Chart showing the development of the Pennsylvanian classification in the Illinois Basin. From the Tri-State Committee (2001). | |Caption=Figure 4-1. Chart showing the development of the Pennsylvanian classification in the Illinois Basin. From the Tri-State Committee (2001). | ||
Used courtesy of the Tri-State Committee. | Used courtesy of the Tri-State Committee. | ||
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Revision as of 22:24, 28 January 2021
Figure 4-1. Chart showing the development of the Pennsylvanian classification in the Illinois Basin. From the Tri-State Committee (2001). Used courtesy of the Tri-State Committee.
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