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Curly schoolboy in protective goggles looking at flasks and tubes
Little boy in protective glasses making experiment in chemical laboratory
Little girl wearing lab coat and protective glasses holding flask with green reagent
Little boy scientist with glasses holding flask with chemical green liquid against of drawn blackboard
Pop-eyed funny boy after chemical experiment in chemistry lab with fume
Portrait of schoolgirl in chemistry lab
A little boy in mask looking at liquid in flask
Schoolgirl in protective goggles holding flask with chemical sample near chalkboard
Little boy wearing lab coat in science laboratory
Schoolgirl in protective goggles holding flask with chemical sample
Little girl in white coat sitting on table and holding clipboard in science laboratory
Kids in protective glasses and lab coats making experiment in chemical laboratory
Schoolgirl holding flask with chemical sample while sitting in lab
Smiling schoolgirl holding flask with chemical sample