File:PSM V37 D180 The glass etching process.jpg
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current | 06:56, 24 June 2015 | 1,430 × 2,034 (631 KB) | Ineuw | Cleaned image and improved contrast | |
22:59, 22 October 2010 | 1,485 × 2,010 (608 KB) | Ineuw | {{Information |Description = The glass etching process |Source = http://en.wikisource.org/wiki/Page:Popular_Science_Monthly_Volume_37.djvu/180 |Date = 1890 |Author = Unknown |Permission = {{PD-old}} |other_versions = |
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