green chalkboard icon isolated seamless pattern background school blackboard sign vector illustration |
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| navigate by keyword : back background banner billboard blackboard blank board business chalk chalkboard class classroom concept copy design dirty education empty flat frame graphic green icon illustration isolated learning lesson object old pattern random retro rub school seamless sign space study teacher teaching template university vector wood wooden write |
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| Green Chalkboard icon isolated seamless pattern on green background. School Blackboard sign. Vector Illustration |
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