black line abacus icon isolated transparent background traditional counting frame education sign mathematics |
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| navigate by keyword : abacus accounting ancient antique arithmetic art background bead black business calculation calculator chinese concept contour count counting education equipment finance financial flat frame icon inches isolated learning line linear lineart math mathematical mathematics number object old outline retro row school subtraction symbol tool traditional transparent vector vintage wood wooden work |
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| Black line Abacus icon isolated on transparent background. Traditional counting frame. Education sign. Mathematics school. Vector Illustration. |
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