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Three excited funny children after chemical experiment in lab
Three little students on chemistry lesson in lab doing an experiment
Two schoolchildren in white gowns watching chemical experiment in lab
Happy little girl with flasks for chemistry isolated on a white background
Excited schoolgirl in fume after chemical experiment in scool lab
Pop-eyed funny boy after chemical experiment in chemistry lab with fume
Little smarl girl in white gown in chemistry lab doing an experiment
Schoolboy gown and gloves watching chemical experiment in tube in chemistry lab
Schoolboy in chemistry lab got an idea practising experiments
