The map of the empire’s border between the Caspian and Black m.

The map of the border of the empire between the Caspian and Black m. - -.-1778, copy of the second sex.XVIII century.;Kart.Op.657;36x64;Additional Agreement No. 1 of May 21, 2021 to the contract.No. 90-19 dated August 27, 2019 (Ban)..Electronic copy source: ban