Columbia subject headings:
Harvard subject headings:
Rossiiskaia sotsial-demokraticheskaia rabochaia partiia. Simbirskaia gruppa.
Princeton subject headings:
Rossiĭskai︠a︡ sot︠s︡ial-demokraticheskai︠a︡ rabochai︠a︡ partii︠a︡--History.
Ulʹi︠a︡novsk (Russia)--Politics and government.