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Light bulb idea concept on chalkboard
Related tags:
- green board
- chalkboard
- green chalkboard
- chalk
- blackboard
- classroom board
- classroom blackboard
- class board
- chalk background
- writing board
- school board
- chalk drawing
- knowledge background
- classroom
- knowledge
- school blackboard
- blackboard background
- school class
- old sign
- class background
- school classroom
- old pattern
- retro background
- school texture
- class
- education pattern
- vintage
- sketch design
- old design
- classroom background
- education symbol
