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File:Charles Kirchhoff.jpg

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Description Portrait photograph of technical (metals) journalist Charles William Henry Kirchhoff
Date published 1916
Source (September 1916). "Charles Kirchhoff - In Memoriam". Bulletin of the American Institute of Mining Engineers (117): iv.
Author Unknown photographer
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This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country.
Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:Charles_Kirchhoff.jpg

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current15:27, 18 July 2012Thumbnail for version as of 15:27, 18 July 2012949 × 1,347 (191 KB)Bob Burkhardt (talk | contribs){{Information |Description=Portrait photograph of technical (metals) journalist Charles William Henry Kirchhoff |Source={{Cite journal|title=Charles Kirchhoff - In Memoriam|url=http://books.google.com/books?id=KS4OAAAAYAAJ&pg=PR4|journal=Bulletin of th...

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