File:Adolphe Mathieu plaque J1.jpg
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![File:Adolphe Mathieu plaque J1.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/f/f6/Adolphe_Mathieu_plaque_J1.jpg/800px-Adolphe_Mathieu_plaque_J1.jpg?20221031203823)
Size of this preview: 800 × 513 pixels. Other resolutions: 320 × 205 pixels | 640 × 411 pixels | 1,024 × 657 pixels | 1,280 × 821 pixels | 2,560 × 1,642 pixels | 4,946 × 3,173 pixels.
Original file (4,946 × 3,173 pixels, file size: 18.05 MB, MIME type: image/jpeg)