Students looking at react tubes in a chemistry classroom in a secondary school. Holland. vvbvanbree fotografie.

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Photo credit: © Gerard van Bree / Alamy / Afripics
License: Royalty Free
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Keywords: books, chemistry, classroom, concentrates, education, fotografie, girls, glasses, hands, holland, information, learning, person, persons, pointing, portret, protection, react, school, secondary, student, students, teacher, teaching, test, testing, tube, vvbvanbree, work, working, yougt, young