File:PSM V16 D220 Old Mathematical calculation 1.jpg

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Description Old style mathematical calculation
Date between 1879 and 1880
date QS:P,+1850-00-00T00:00:00Z/7,P1319,+1879-00-00T00:00:00Z/9,P1326,+1880-00-00T00:00:00Z/9
Source Popular Science Monthly Volume 16
Author Unknown authorUnknown author
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This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: Extracted image from book, to grayscale, cropped whitespace. Modifications made by Ineuw. The original can be found here: Popular Science Monthly Volume 16.

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Date/TimeThumbnailDimensionsUserComment
current07:24, 1 February 2011Thumbnail for version as of 07:24, 1 February 20111,172 × 378 (31 KB)Ineuw{{Information |Description = Old style mathematical calculation |Source = [http://www.archive.org/details/popularsciencemo16newy Popular Science Monthly Volume 16] |Date = 1879-1880 |Author = Unknown |Permission = {{P
06:10, 1 February 2011Thumbnail for version as of 06:10, 1 February 2011390 × 148 (7 KB)Ineuw{{Information |Description = Old style mathematical calculation |Source = [http://www.archive.org/details/popularsciencemo16newy Popular Science Monthly Volume 16] |Date = 1879-1880 |Author = Unknown |Permission = {{P

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