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