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Performing an experiment. Teacher and pupil. Male teacher giving lesson in science classroom. Public or private school teacher. Chemistry teacher with microscope and test tubes at lesson
Keywords:
men
education
studying
laboratory
working
child
indoors
caucasian ethnicity
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blackboard
desk
science
student
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chemistry
learning
teaching
looking
adult
intelligence
development
sitting
formula
beard
professor
teacher test
biology teacher
chemistry lesson
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teacher testing
private lessons
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