Rail transport for 1927-28 operas.year

Rail transport for 1927-28 operas.year: (preliminary statistics) / People's Commissariat.Department of Statistics and Cartography.- Moscow: People's Commissariat - Transpechat, 1929. -45 p.: Tables .. -.I. USSR.People's Commissariat of Railways.Department of Statistics and kartografii.1.People (collection).electronic copy Source: PBThe storage location of the original: St. Petersburg State University