Author Ковалевский М. Description Kovalevsky, M. From the history of state power in Russia. - Moscow: The Book of E.D. Myagkov's "The Bell", 1905. -112 pp .. - (First Library, No. 20) . Source of the electronic copy: PB Publisher Кн-во Е.Д. Мягкова "Колокол"
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