green line chalkboard icon isolated seamless pattern blue background school blackboard sign vector |
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| navigate by keyword : blackboard chalkboard board chalk blank education school vector illustration background icon isolated seamless pattern random 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 teacher |
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| Green line Chalkboard icon isolated seamless pattern on blue background. School Blackboard sign. Vector. |
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