Administrative-territorial composition of the USSR on July 1, 1925 and July 1, 1926 in comparison with the pre-war division of R...

The administrative-territorial structure of the USSR on July 1, 1925 and July 1, 1926, in comparison with the pre-war division of Russia: the experience of establishing communication between the administrative territory.The composition of pre-war Russia and the modern composition of the USSR / USSR.- M.: Type.MKH them.F.Ya.Lavrov, 1926. - (Proceedings of the Central Statistical Office).Electronic Source: PB