File:203 Physical Studies of Pennsylvanian Shale in a High Fill.pdf
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current | 09:10, 9 January 2019 | ![]() | 1,275 × 1,650, 56 pages (7.97 MB) | Smithk (talk | contribs) | Reverted to version as of 20:38, 24 February 2011 |
08:32, 26 July 2018 | ![]() | 1,275 × 1,650 (8 KB) | Renekj1 (talk | contribs) | ||
15:38, 24 February 2011 | ![]() | 1,275 × 1,650, 56 pages (7.97 MB) | Smithk (talk | contribs) |
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