black chalkboard icon isolated white background school blackboard sign circle button vector illustration |
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| navigate by keyword : back background banner billboard black blackboard blank board business button chalk chalkboard circle class classroom concept copy design dirty education empty flat frame graphic grey icon illustration inches isolated learning lesson object old retro rub school sign space study teacher teaching template university vector white wood wooden write |
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| Black Chalkboard icon isolated on white background. School Blackboard sign. Circle button. Vector Illustration. |
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