00571naa#a2200181#i#450# EN\ACADEMUS PUBLISHING\bibl\3234 20220524092104.2 20190106b2019####ek#y0engy0150####ca RU To the Question of the Stability of the Coasts of Lake Onega Conference article/thesis San Francisco Academus Publishing 2019 3 с. Conference article/thesis local . 551.435.3 Науки о Земле. 26 bbk Ignatov E I Sanin A Yu academuspub.com