File:PSM V17 D548 System of excavation.jpg
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 05:55, 12 February 2014 | 815 × 742 (112 KB) | Ineuw | Sharpened image | |
15:42, 16 August 2010 | 842 × 763 (83 KB) | Ineuw | {{Information |Description = System of the Gotthard tunnel excavation |Source = http://en.wikisource.org/wiki/Page:Popular_Science_Monthly_Volume_17.djvu/548 |Date = 1880 |Author = Unknown |Permission = {{PD-old}} |other_versions = }} [[Category:P |
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