Columbia subject headings:
Partīi︠a︡ sot︠s︡īalistov-revoli︠u︡t︠s︡īonerov--History.
Partīi︠a︡ sot︠s︡īalistov-revoli︠u︡t︠s︡īonerov--Sources.
Soviet Union--History--Sources.
Harvard subject headings:
Partīi︠a︡ sot︠s︡īalistov-revoli︠u︡t︠s︡īonerov--History.
Partīi︠a︡ sot︠s︡īalistov-revoli︠u︡t︠s︡īonerov--Sources.
Soviet Union--History--1917-1936--Sources.
Soviet Union--History--Sources.
Princeton subject headings: