professor of chemistry in a chemical laboratory

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Size: 4387px × 5000px
Location: europa
Photo credit: © Slavonic / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: cartoon, chemical, chemistry, drawing, exercises, experience, gentleman, hand, laboratory, lecture, lesson, male, man, occupation, overworked, profession, professor, senior, sketch, test, test-tube, tube, vector, vectors, work, working