Person drawing symbols coming out of a light bulb on top of a book

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• open book
• knowledge
• books study
• research paper
• inventor
• library books
• library
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• book
• light bulb
• invention
• read book
• light bulb idea
• idea bulb
• bulb
• journal
• reading
• idea
• diary book
• inspiration
• drawing book
• study
• learn
• flip book
• research
• diary
• writing book
• university
• tutorial
• book page
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• writing
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