![](http://www.alamy.com/thumbs/6/9264C922-F238-4ECC-B3E3-614BDFDDA8B6/PXM2X3.jpg)
Rechenschieber, Abakus mit bunten Kugeln
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Photo credit: © XTPgreyscape / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: abakus, blue, bunten, calculating, childhood, colorful, concept, education, kugeln, mathematics, mit, rechenschieber, symbol, white, wood, yellow