A.N.Guryev, I.M.Kiransky and I.A.Nikolsky.Jokes.Kargopol district, Olonets province.

A.N.Guryev, I.M.Kiransky and I.A.Nikolsky.Jokes.Kargopol district, Olonets province.- -.-Agreement No. 24 of 02/12/2016 category 25 manuscript of the works of members of the Russian Geographical Society and separate documents in the Olonets province, case 53..Electronic copy source: PB