File:Scott de Martinville Edouard-Leon 1859 Phonautograph.jpg
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Scott_de_Martinville_Edouard-Leon_1859_Phonautograph.jpg (460 × 371 pixels, file size: 56 KB, MIME type: image/jpeg)
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current | 09:30, 20 February 2014 | 460 × 371 (56 KB) | Dusan (talk | contribs) |
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