File:Calculating machines 21.png

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Illustration from 1911 Encyclopædia Britannica, article CALCULATING MACHINES.

Diagram accompanying explanation of Integraphs.

Public domain This image comes from the 13th edition of the Encyclopædia Britannica or earlier. The copyrights for that book have expired in the United States because the book was first published in the US with the publication occurring before January 1, 1929. As such, this image is in the public domain in the United States.
Public domain This image comes from the Project Gutenberg archives. This is an image that has come from a book or document for which the American copyright has expired and this image is in the public domain in the United States and possibly other countries.

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current11:56, 19 November 2006Thumbnail for version as of 11:56, 19 November 2006602 × 626 (4 KB)Laverock~commonswiki (talk | contribs)Illustration from 1911 Encyclopædia Britannica, article CALCULATING MACHINES. Diagram accompanying explanation of Integraphs. {{PD-Britannica}} Category:Images from Encyclopædia Britannica {{PD-Gutenberg}}

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