File:PSM V05 D140 Hermann Ludwig Ferdinand Helmholtz.jpg
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 22:20, 30 June 2010 | 2,139 × 2,650 (1.05 MB) | Ineuw | {{Information |Description = Hermann Ludwig Ferdinand Helmholtz |Source = http://en.wikisource.org/wiki/Page:Popular_Science_Monthly_Volume_5.djvu/140 |Date = 1874 |Author = Unknown |Permission = {{PD-old}} |other_versions = }} {{GFDL-user-w|en|Wik |
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