V.F.Budrin.Description of the village of large keys of the Perm province, Krasnoufimsky district.

V.F.Budrin.Description of the village of large keys of the Perm province, Krasnoufimsky district.- 1849. -Agreement No. 24 of 02/12/2016 category 29 of the manuscript of the works of members of the Russian Geographical Society and separate documents in the Perm province, case 89..Electronic copy source: PB