. . "URSS" . . "History Dictionaries." . . . . "Советская историческая энциклопедия" . "Sovetskai︠a︡ istoricheskai︠a︡ ėnt︠s︡iklopedii︠a︡" . . . . . . . "Sovetskaia istoricheskaia entsiklopediia" . "Dictionaries" . . . "<>"@ru . . . . "Sovetskaia istoricheskaia éntsiklopediia" . . . . . . . . . . . . . . . . . .