quaternary chalk concept icon knowledge sector idea information based service intellectual activity research and |
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navigate by keyword : abstract activity advertising art based black blackboard board business campaign chalk chalkboard company concept conception connection design development doodle drawing drawn economy entrepreneurship finance financial graphic hand icon idea illustration industrial industry information intellectual isolated knowledge logo marketing meaning quaternary research sector service sign sketch strategy symbol technology vector web white |
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Quaternary chalk concept icon. Knowledge sector idea. Information-based service. Intellectual activity, research and development. Economy sector. Vector isolated chalkboard illustration |
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