Part Plan of the Kronstadt Fortress

Plan of part of the Kronstadt fortress / E. G. von Grefenitsa (comp.).- -.-1762, copy of 1768;Kart.Op.753;33x45;Additional Agreement No. 1 of May 21, 2021 to the contract.No. 90-19 dated August 27, 2019 (Ban)..Electronic copy source: ban