File:PSM V16 D220 Old Mathematical calculation 3.jpg
PSM_V16_D220_Old_Mathematical_calculation_3.jpg (695 × 417 pixels, file size: 25 KB, MIME type: image/jpeg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 22:23, 2 February 2011 | 695 × 417 (25 KB) | Ineuw | {{Information |Description = Old style mathematical calculation |Source = [http://www.archive.org/details/popularsciencemo16newy Popular Science Monthly Volume 44] |Date = 1893-1894 |Author = Unknown |Permission = {{P |
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