Columbia subject headings:
Harvard subject headings:
Rossiiskaia sotsial-demokraticheskaia rabochaia partiia.
Princeton subject headings:
Kommunisticheskai︠a︡ partii︠a︡ Sovetskogo Soi︠u︡za--History--Historiography.
Kommunisticheskai︠a︡ partii︠a︡ Sovetskogo Soi︠u︡za--History--Sources.