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Schoolboy writing chemical formulas on chalkboard in classroom
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ID:
72927
Child doing chemical research in laboratory. Dangerous experiment
Smart pupils making experiment in chemistry class
Teacher with pupils at chemistry lesson in classroom
Teacher with pupil making experiment at table in chemistry class
Teacher with pupils at chemistry lesson in classroom
Teacher with pupil at chemistry lesson in classroom
Teacher with pupil making experiment at table in chemistry class
Teacher with pupil using microscope in chemistry class
Smart pupils making experiment in chemistry class, focus on flask with reagent
Child doing chemical research in laboratory. Dangerous experiment
Smart pupils making experiment in chemistry class, focus on flask with reagent
Child doing chemical research in laboratory. Dangerous experiment
Smart pupils making experiment in chemistry class
Schoolgirl looking through microscope and her classmates at chemistry class
Schoolgirl holding flask and notebooks near chalkboard with chemical formulas
Child doing chemical research in laboratory. Dangerous experiment
Schoolboy writing chemical formulas on chalkboard in classroom
Schoolgirl holding flasks near chalkboard with chemical formulas
Child doing chemical research in laboratory. Dangerous experiment
Schoolchild making experiment at table in chemistry class
Schoolboy holding flask near chalkboard with chemical formulas
Child doing chemical research in laboratory. Dangerous experiment
Child doing chemical research in laboratory. Dangerous experiment
Child doing chemical research in laboratory. Dangerous experiment
Child doing chemical research in laboratory. Dangerous experiment
Schoolboy holding flask and notebooks near chalkboard with chemical formulas
Schoolchild making experiment at table in chemistry class
Child doing chemical research in laboratory. Dangerous experiment
Child doing chemical research in laboratory. Dangerous experiment
Teacher with pupil making experiment at table in chemistry class
Teacher with pupil at chemistry lesson in classroom
Schoolchild making experiment at table in chemistry class
Teacher with pupil making experiment at table in chemistry class
Schoolchild making experiment at table in chemistry class
Schoolchild making experiment at table in chemistry class
Teacher with pupils at chemistry lesson in classroom
Child doing chemical research in laboratory. Dangerous experiment
Teacher with pupils at chemistry lesson in classroom
Teacher with pupils at chemistry lesson in classroom
Teacher with pupil making experiment at table in chemistry class
Schoolchild making experiment at table in chemistry class
Schoolboy holding flask near chalkboard with chemical formulas
Teacher with pupil making experiment at table in chemistry class
Teacher with pupils at chemistry lesson in classroom
Schoolchild making experiment at table in chemistry class
Teacher with pupil making experiment at table in chemistry class
Teacher with pupil making experiment at table in chemistry class, focus on hand
Teacher with pupil making experiment at table in chemistry class
Teacher with pupils at chemistry lesson in classroom
Smart pupils making experiment in chemistry class
Smart pupils making experiment in chemistry class
Smart pupils making experiment in chemistry class
Smart pupils making experiment in chemistry class
Children doing chemical research in laboratory. Dangerous experiment
Smart pupils making experiment in chemistry class
Smart pupils making experiment in chemistry class
Smart pupils making experiment in chemistry class
Teacher with pupils at chemistry lesson in classroom
Child doing chemical research in laboratory, closeup. Dangerous experiment
Children doing chemical research in laboratory. Dangerous experiment
Teacher with pupil making experiment at table in chemistry class, focus on hand
Children doing chemical research in laboratory. Dangerous experiment
Teacher with pupil making experiment in chemistry class
Teacher with pupil making experiment in chemistry class
Children doing chemical research in laboratory. Dangerous experiment
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