English: Diagram of Multiplication. The process of multiplication is performed in order to obtain such results exhibited in the form of the diagrams E or E′.
(Illustration from Encyclopædia Britannica Eleventh Edition, 1911, article Arithmetic)
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.
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