Columbia subject headings:
Political leadership--Russia--History--Congresses.
Political leadership--Soviet Union--History--Congresses.
Russia--Politics and government--Congresses.
Soviet Union--Politics and government--Congresses.
Harvard subject headings:
Political leadership--Russia--History--Congresses.
Political leadership--Soviet Union--History--Congresses.
Russia--Politics and government--Congresses.
Soviet Union--Politics and government--Congresses.
Princeton subject headings:
Political leadership--Russia--History--Congresses.
Political leadership--Soviet Union--History--Congresses.
Russia--Politics and government--History--Congresses.
Soviet Union--Politics and government--History--Congresses.