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https://hibara.net/2012/07/09/%d1%81%d1%80%d1%83%d0%b1-%d1%83%d1%81%d1%82%d1%80%d0%be%d0%b9%d1%81%d1%82%d0%b2%d0%be-%d0%ba%d1%80%d0%be%d0%b2%d0%bb%d0%b8/
Сруб - устройство кровли