Columbia subject headings:
Partīi︠a︡ sot︠s︡īalistov-revoli︠u︡t︠s︡īonerov.
Political parties--Russia.
Harvard subject headings:
Partii︠a︡ levykh sot︠s︡īalistov-revoli︠u︡t︠s︡ionerov.
Political parties--Russia.
Princeton subject headings:
Partīi︠a︡ sot︠s︡īalistov-revoli︠u︡t︠s︡īonerov.
Political parties--Russia.
Political parties--Soviet Union.