Title: Hydroelectric power stations of the Volga and Kama cascade systems
Subjects: Volzhskai︠a︡ gidroėlektricheskai︠a︡ stant︠s︡ii︠a︡, Kamskai︠a︡ gidroėlektricheskai︠a︡ stant︠s︡ii︠a︡