Title: Russkoe bi͡u︡ro T͡S︡K bolʹshevistskoĭ partii, 1912 g.-mart 1917 g
Subjects: Rossiĭskai︠a︡ sot︠s︡ial-demokraticheskai︠a︡ rabochai︠a︡ partii︠a︡, Socialism, History