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File:Abacus 6.png

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Deutsch: Abakus
English: Abacus
Español: Ábaco
Svenska: Abakus, Kinesisk

Scanned and uploaded by Malcolm Farmer (englische Wikipedia)

Source: Article for "abacus", 9th edition Encyclopedia Britannica, volume 1 (1875)

Public domain This image comes from the 12th edition of the Encyclopædia Britannica or earlier. The copyrights for that book have expired and this image is in the public domain.
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