The natural productive forces of Russia.T. 2. White coal

Natural productive forces of Russia / Commission on the study of natural.produces.forces of Russia, consisting of Ros.Acad.sciences.- Petrograd: [B.I.], 1917-1924.-.I. The commission on the study of the natural productive forces of the USSR. 1.Territory (collection).Electronic copy source: PBOriginal storage: St. Petersburg State UniversityT. 2: White coal.1, northern region.- 2nd state.Type., 1921. -99 p., 1 l.kart.: table .. -Ex.: Without Titus.l..1. Territory (collection).Electronic copy source: PBOriginal storage: St. Petersburg State University