File:AmCyc Anthracite - Pennsylvania basins.jpg
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 16:37, 17 October 2013 | 2,536 × 376 (110 KB) | Bob Burkhardt | {{Information |Description={{en|Cross-section diagram of the anthracite deposits in Pennsylvania.}} |Source=''The American Cyclopædia'', v. 1, 1879, between p. 550. |Date=published 1879 |Author=S. Harries Daddow? |Permission={{PD-1923}} |other_version... |
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