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Little scientists adding color dye into beakers
Children doing chemical research in laboratory. Dangerous experiment
Two schoolchildren in white gowns watching chemical experiment in lab
Children in goggles using pipette when mixing liquids in beakers
Three little students on chemistry lesson in lab doing an experiment
Two little students on chemistry lesson in lab doing an experiment
Smart pupils making experiment in chemistry class
Teacher with pupil making experiment at table in chemistry class
Teacher and pupils at chemistry lesson in classroom
Schoolchild making experiment at table in chemistry class
