line abacus icon isolated grey background traditional counting frame education sign mathematics school colorful |
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| navigate by keyword : abacus education wooden mathematics calculator tool traditional counting frame count vector icon isolated color colorful line linear contour outline art lineart square black white background wood object business flat accounting math finance retro calculation old school subtraction antique learning vintage arithmetic mathematical ancient bead number concept equipment symbol |
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| Line Abacus icon isolated on grey background. Traditional counting frame. Education sign. Mathematics school. Colorful outline concept. Vector. |
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