[Dagestan] [Postcards set] / FOT.N. Sokolova, ed.Z. Vishnyakova, thin.Ed.D. Byazrov, Techno.Ed.L. Volkova.

[Dagestan] [Postcards set] / FOT.N. Sokolova, ed.Z. Vishnyakova, thin.Ed.D. Byazrov, Techno.Ed.L. Volkova.- M .: Soviet Russia, 1970. -.Electronic copy source: PB