Dagestan region

Potto, Vasily Alexandrovich (1836-1911). Dagestan. St. Petersburg: publication of VA Berezovsky, qualification. 1899.

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  Kozubsky, Evgeny Ivanovich (-1911).     Memorable book of the Dagestan region.
Temir-Khan-Shura: "The Russian type." VM Sorokina, 1895.

РГБ