File:朱世杰算学启蒙中的天元术.JPG
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朱世杰算学启蒙中的天元术.JPG (783 × 543 pixels, file size: 132 KB, MIME type: image/jpeg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 06:56, 24 April 2012 | 783 × 543 (132 KB) | commons>Gisling |
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