Signs told by two peasant boys from s.Dobrina.Bobrovsky district, Kaluga province.

Signs told by two peasant boys from s.Dobrina.Bobrovsky district, Kaluga province.- 1897. -Agreement No. 24 of 02/12/2016 category 15 manuscript of the works of members of the Russian Geographical Society and separate documents in the Kaluga province, case 66..Electronic copy source: PB