Открытый урок по химии в 8-х класса школы №22 г. Тамбова

  • 10 лет назад
увлекательный открытый урок химии в 8-х класса школы №22 г. Тамбова проводимый учителем химии Сай Н.С. и выпускниками 11 хим-био класса.

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