File:Amusements in mathematics - The Ruby Brooch.png
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 21:47, 22 February 2021 | 1,123 × 1,123 (201 KB) | Sp1nd01 | Uploaded a work by Henry Ernest Dudeney, 1857-1930 from https://en.wikisource.org/wiki/Page:Amusements_in_mathematics.djvu/156 with UploadWizard |
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