Author Каменев Лев Борисович Description Kamenev, Lev Borisovich (1883-1936). The economic system of imperialism and the tasks of socialism: Sat. Art. - 3rd ed. -Moscow: Gos. publishing house. Moscow. Depth, 1922. -148 s .. -5000 copies. . Source of the electronic copy: PB Publisher Гос. изд-во. Моск. отд-ние