Почему ртутный градусник опасен для золота?
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![Твёрдая ртуть. Секрет древних Сиддхаров. [№ .]](https://sun9-47.userapi.com/6TMahJeqS4LRkOdPFyB0O1vatRRepellrNDgKQ/SvTsLjtany0.jpg)
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