Interesting chemistry. Serious thoughtful bearded man holding a chemical flask and looking at the liquid in it while showing the children an experimen

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Interesting chemistry. Serious thoughtful bearded man holding a chemical flask and looking at the liquid in it while showing the children an experiment

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Size: 5760px × 3840px
Photo credit: © Viacheslav Iakobchuk / Alamy / Afripics
License: Royalty Free
Model Released: No

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