red line chalkboard icon isolated seamless pattern black background school blackboard sign vector |
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| navigate by keyword : art back background banner billboard blackboard blank board business chalk chalkboard class classroom concept contour copy design dirty education empty flat frame graphic icon illustration inches isolated learning lesson line linear lineart object old outline pattern retro rub school seamless sign space study teacher template university vector wood wooden write |
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| Red line Chalkboard icon isolated seamless pattern on black background. School Blackboard sign. Vector. |
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