Химия элементов 11-й и 12-й групп. Химия элементов 12-й группы
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![Фриц Габер: он загубил миллионы и накормил миллиарды [Veritasium]](https://sun9-50.userapi.com/3P2O0wy_BiyHxFYRXBK0SJpK_XLu0mWrKoQhxg/udUpfFn3WeE.jpg)
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