File:Grun rig.pdf
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Grun_rig.pdf (597 × 583 pixels, file size: 8 KB, MIME type: application/pdf)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 20:40, 14 April 2019 | ![]() | 597 × 583 (8 KB) | commons>Tomo | {{Information |description ={{en|1=The first known geometric 4-configuration, established by Grünbaum and Rigby in 1990l}} |date =2019-04-14 |source ={{own}} |author =User:Tomo }} |
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