Irkutsk province.(2 l.) Geological manuscript maps of the Irkutsk province, comp.Horn.Ing.K. Bogdanovich in 1895 1).The route ge...

Irkutsk province.(2 l.) Geological manuscript maps of the Irkutsk province, comp.Horn.Ing.K. Bogdanovich in 1895 1).The route geological map of part of the Nizhneudinsky district 2).Geological crates of parts of the Balagan and Irkutsk districts.- -.-End of the XIX century.;Kart.Additional.28;64 x 80;Additional Agreement No. 1 of May 21, 2021 to the contract.No. 90-19 dated August 27, 2019 (Ban)..Electronic copy source: ban