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Laboratory test tubes and flasks with colored liquids father and son child at school. laboratory research and development. Chemistry beaker experiment. bearded man teacher with little boy. Imagine.
Keywords:
education
teaching
studying
laboratory
childhood
child
indoors
caucasian ethnicity
teacher
blackboard
desk
intelligence
scientific experiment
science
student
biology
formula
classroom
research
schoolboy
scientist
professor
chemistry
learning
boys
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