line chalkboard icon isolated blue background school blackboard sign colorful outline concept vector illustration |
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| navigate by keyword : art back background banner billboard blackboard blank board business chalk chalkboard class classroom color colorful concept contour copy design dirty education empty flat frame graphic icon illustration isolated learning lesson line linear lineart logo logotype object old outline retro school sign space study teacher template university vector wood wooden write |
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| Line Chalkboard icon isolated on blue background. School Blackboard sign. Colorful outline concept. Vector Illustration |
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