Teacher pouring chemical into test tube with his student .
Contributor: sirikorn
ID : 207267696
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Keywords
teacher, education, chemistry, experiment, school, laboratory, chemical, science, laboratory, young, classroom, class, study, learning, tube, stem, equipment, student, test, lesson, people, girl, group, children, student, boy, elementary, children, childhood, research, studying, high, person, happy, looking, children, biology, cognition, discovery, scientist, glassware, caucasian, working, man, teenageRelated items
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