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File:PSM V21 D047 Left and right projection of a cone.jpg

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Description Left and right projections of a glass cone
Date
Source Popular Science Monthly Volume 21
Author Unknown authorUnknown author
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current17:51, 23 May 2010Thumbnail for version as of 17:51, 23 May 20101,505 × 682 (49 KB)Ineuw{{Information |Description = Left and Right Projections of Glass Cone. |Source = http://en.wikisource.org/wiki/Page:Popular_Science_Monthly_Volume_21.djvu/49 |Date = 1881 |Author = Unknown |Permission = {{PD-old}} |other_versions = }} {{GFDL-user-w

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