The Lower Volga region in the scientific thought of Russia: the problems of studying history, culture and economic development (...

The Lower Volga region in the scientific thought of Russia: the problems of studying history, culture and economic development (XVIII century.-30s of the XX century) / Kleitman A.L.- Moscow, 2019. -605: people, territory..Source of an electronic copy: the Institute of the History of Natural Sciences and Technology of the Russian Academy of Sciences.Website