https://vital.lib.tsu.ru/vital/access/manager/Index en-us 5 Traces of Canadian pyrocumulonimbus clouds in the stratosphere over Tomsk in June-July, 1991 https://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000673996 Wed 29 Jan 2020 11:30:28 KRAT ]]>