Kémia A Tudomány Osztály. Lecke tervek - Középiskolai kémia. iskoláslány. Boldog mosolygó diákrajzot az asztalnál. Egy kis kémiai kísérlet volt. Kísérlet. - Stock fotó és kép

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Kid from primary school. Lab microscope and testing tubes. First grade. Back to school and happy time Kid is learning in class on background of blackboard.

Kid from primary school. Lab microscope and testing tubes. First grade. Back to school and happy time Kid is learning in class on background of blackboard.

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Lab microscope and testing tubes. Child in the class room with blackboard on background. Biology experiments with microscope. Lesson Plans - Middle School Chemistry

Cheerful smiling little boy having fun against blue wall. Kid from primary school. Kid is learning in class on background of blackboard. Happy smiling pupil drawing at the desk

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