Columbia subject headings:
Harvard subject headings:
Rossiĭskai︠a︡ sot︠s︡ial-demokraticheskai︠a︡ rabochai︠a︡ partii︠a︡--Party work.
Siberia (Russia)--History--Revolution, 1917-1921.
Princeton subject headings:
Communists--Russia (Federation)--Siberia--Congresses.
Kommunisticheskai︠a︡ partii︠a︡ Sovetskogo Soi︠u︡za--History--Congresses.
Siberia (Russia)--Politics and government--20th century--Congresses.