red line chalkboard icon isolated seamless pattern black background school blackboard sign vector |
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| navigate by keyword : blackboard chalkboard board chalk vector illustration blank education school background icon isolated seamless pattern line linear contour outline art lineart 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 learning inches teacher university rub |
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| Red line Chalkboard icon isolated seamless pattern on black background. School Blackboard sign. Vector. |
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