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File:Schoty abacus.jpg

A russian abacus. Photo taken by Staecker. No rights reserved.

Public domain This work has been released into the public domain by its author, Staecker. This applies worldwide.
In some countries this may not be legally possible; if so:
Staecker grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

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Through Schools Wikipedia, SOS Childrens Villages has brought learning to children around the world. SOS Childrens Villages is there for the children in our care until they are ready for independence. We have helped children in Africa for many years - you can help too...