senior chemistry professor giving lecture
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Stockphotos.ro (c) 2025. All stock photos are provided by Dreamstime and are copyrighted by their respective owners.
senior chemistry professor giving lecture |
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| navigate by keyword : academic blackboard board caucasian chalk chemistry class classroom coat college concentrate degree education elderly faculty formula giving graduate hall high intelligent learn lecture lecturing male man one person physics profession professor pupils school science scientist secondary senior smile students study teacher university white wisdom wise write |
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| Senior chemistry professor giving a lecture in front of classroom full of students (shallow DOF; color toned image) |
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Stockphotos.ro (c) 2025. All stock photos are provided by Dreamstime and are copyrighted by their respective owners. |
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