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Schoolgirl in protective goggles holding flask with chemical sample

Little girl wearing lab coat and protective glasses holding flask with green reagent

Kids in protective glasses and lab coats making experiment in chemical laboratory

Schoolgirl in protective goggles holding flask with chemical sample

Little girl wearing lab coat and protective glasses holding flask with green reagent

Excited schoolgirl in fume after chemical experiment in scool lab

Schoolgirl holding flask with chemical sample while sitting in lab

Curly schoolboy in protective goggles looking at flasks and tubes