Подробнее: http://www.igce.ru/2020/11/%d0%b2%d1%8b%d1%88%d0%bb%d0%b0-%d0%b2-%d1%81%d0%b2%d0%b5%d1%82-%d0%bc%d0%be%d0%bd%d0%be%d0%b3%d1%80%d0%b0%d1%84%d0%b8%d1%8f-%d0%b8-%d0%bb-%d0%b3%d0%be%d0%b2%d0%be%d1%80-%d0%b8%d0%b3%d0%ba%d1%8d/
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