File:PSM V37 D182 The four stages of etching from right to left.jpg
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Original file (2,025 × 1,451 pixels, file size: 1.06 MB, MIME type: image/jpeg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 07:01, 24 June 2015 | 2,025 × 1,451 (1.06 MB) | Ineuw | Cleaned image and improved contrast | |
22:59, 22 October 2010 | 2,049 × 1,464 (898 KB) | Ineuw | {{Information |Description = The four stages of etching from right to left |Source = http://en.wikisource.org/wiki/Page:Popular_Science_Monthly_Volume_37.djvu/182 |Date = 1890 |Author = Unknown |Permission = {{PD-old} |
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