science teacher professor standing near chalkboard teaching boy student classroom school |
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| navigate by keyword : chemistry education professor student knowledge university experiment illustration study flat cartoon vector scientist college learning professional chemist research book lesson school microscope people class laboratory science teaching board standing teacher doctor person professions idea work scholar senior information occupation lab man classroom chalkboard chemical old blackboard job training avatar male |
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| Science chemistry teacher, scientist professor standing near chalkboard teaching student in laboratory classroom at school, college or university. Schoolboy cartoon character sitting on a chair |
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