Roman hand abacus" av Alexander Babuch - Mostphotos
Abacus Vector Black Icon. Vector Illustration Tool for Counting on White Background. Isolated Black Illustration Icon of Stock Vector - Illustration of white, etching: 235192294
Vector hand drawn illustration of soroban ? japan abacus. vintage engraved style. isolated on white background. | CanStock
Abacus - Linear Suspension LED - David D'Imperio
Old wooden abacus and calculator isolated on a white backgroun. Vector illustration Stock Vector Image & Art - Alamy
Pattern with Different Abacus Stock Vector - Illustration of etching, calculation: 90691788