(Q84083212)
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.jpg)
Tonograph - Device invented by Luca de Samuele Cagnazzi (1764-1852).jpg
3,264 × 2,448; 1.81 MB
3,264 × 2,448; 1.81 MB
1 reference
Tonographs
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Multilingual sites(1 entry)
- commonswiki Category:Tonographs