File:Gahn Johan Gottlieb.jpg
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 19:39, 11 September 2017 | 1,064 × 1,056 (1.02 MB) | Ctac | Quality | |
08:26, 18 February 2011 | 516 × 640 (202 KB) | Ctac | Better quality | ||
06:18, 27 September 2009 | 327 × 420 (50 KB) | Materialscientist | cropped whitespace | ||
02:56, 11 September 2008 | 369 × 538 (68 KB) | Astrochemist | {{Information |Description={{en|1=Scan of a picture of Swedish scientist Johan Gottlieb Gahn (who died in 1818). He discovered manganese.}} |Source=''Journal of Chemical Education'' (page 27) |Author=Weeks, Mary Elvira |Date=January, 1932 |Permission= |o |
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