File:Principien1872-642b.png
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Size of this preview: 799 × 262 pixels. Other resolutions: 320 × 105 pixels | 640 × 210 pixels | 1,024 × 336 pixels | 2,464 × 808 pixels.
Original file (2,464 × 808 pixels, file size: 11 KB, MIME type: image/png)