Report on statistical, economic and technical research of the gold industry of the Lensky Mountain District

Gorbachev, M.F.Report on statistical, economic and technical research of the gold industry of the Lensky Mountain District / M.F.Gorbachev, Horn.Ing.;Commission.For the collection and development of information about the Siberian gold industry and for the compilation of the research program of gold -bearing areas.- St. Petersburg: [B.I.], 1903-1905.-.I. Russia.Commission for the collection and development of information on Siberian gold industry. 1.Territory (collection).Electronic copy source: PBOriginal storage: St. Petersburg State University