A.V.Von Grebner.A few words about Sura and the Sur pool.And the letter of Vlad, who was cut off on both sides.Minova.

A.V.Von Grebner.A few words about Sura and the Sur pool.And the letter of Vlad, who was cut off on both sides.Minova.- 1885. -Agreement No. 24 of 02/12/2016 category 37 manuscript of the works of members of the Russian Geographical Society and separate documents in the Simbirsk province, case 32..Electronic copy source: PB