Difference between revisions of "File:Penn carbondale 4-10.jpg"
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Latest revision as of 21:05, 26 January 2021
Figure 4-10. Idealized diagram illustrating the merging of Davis and Dekoven Coals to form the Seelyville Coal, and the splitting of Dekoven Coal into Greenbush and Abingdon Coals. © University of Illinois Board of Trustees.
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