File:PSM V21 D049 Wheatstone stereoscope 2.jpg
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current | 04:02, 26 August 2010 | 1,407 × 892 (73 KB) | Ineuw | {{Information |Description = Wheatstone stereoscope |Source = http://en.wikisource.org/wiki/Page:Popular_Science_Monthly_Volume_21.djvu/49 |Date = 1882 |Author = Unknown |Permission = {{PD-old}} |other_versions = }} [[Category:Popular Science Mont |
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