File:Boulier1.JPG
Abacus
Date
Source
Own work
Author
HB
Azərbaycanca: Çin abakı
Bislama: Abakus blong Jaena
Esperanto: Ĉina abako
Español: Ábaco de China
Licensing
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This work has been released into the public domain by its author, HB. This applies worldwide. In some countries this may not be legally possible; if so: |