Шкільна освіта. Хімічний аналіз. Діти вивчають хімію. Урок хімії школи. Шкільна лабораторія. Дівчинка і хлопчик спілкуються під час проведення шкільного експерименту. Діти навчаються разом у класі . - Стокове фото та зображення

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