Image:Astigmatism.png
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[edit] Summary
Page explaining and illustrating astigmatism. Frederic Eugene Wright, The Methods of Petrographic-microscopic Research, Their Relative Accuracy and Range of Application, Carnegie institution of Washington, 1911 online
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This image is in the public domain in the United States. In most cases, this means that it was first published in the United States prior to January 1, 1923 (see the talk page for more cases). Other jurisdictions may have other rules, and this image might not be in the public domain outside the United States. See Wikipedia:Public domain and Wikipedia:Copyrights for more details.
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- (del) (cur) 07:36, 12 November 2006 . . Dicklyon (Talk | contribs) . . 550×750 (62,651 bytes) (Page explaining and illustrating astigmatism. Frederic Eugene Wright, ''The Methods of Petrographic-microscopic Research, Their Relative Accuracy and Range of Application'', Carnegie institution of Washington, 1911.)
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