File:Petzval Josef Theorie der Tonsysteme.jpg
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Size of this preview: 422 × 600 pixels. Other resolutions: 169 × 240 pixels | 453 × 644 pixels.
Original file (453 × 644 pixels, file size: 111 KB, MIME type: image/jpeg)
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 19:55, 23 July 2014 | | 453 × 644 (111 KB) | Dusan (talk | contribs) |
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