Ученые научились делать бетон с нулевым содержанием выбросов
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![045. Ошибки СССР [научный социализм в вопросах и ответах]](https://sun9-8.userapi.com/Moji7CzMqi45ODs9z_vr7GRESyNgeamF_RvrkQ/kDvwAKrUU0w.jpg)
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