File:Petzval Joseph 1859 On the Camera Obscura.pdf
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Petzval_Joseph_1859_On_the_Camera_Obscura.pdf (file size: 772 KB, MIME type: application/pdf)
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| Date/Time | Dimensions | User | Comment | |
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| current | 22:23, 3 March 2013 | (772 KB) | Dusan (talk | contribs) |
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