Columbia subject headings:
Soviet Union--History--1939-1945--Congresses.
World War, 1939-1945--Soviet Union--Congresses.
Harvard subject headings:
Soviet Union--History--1939-1945--Congresses.
World War, 1939-1945--Soviet Union--Congresses.
Princeton subject headings:
Soviet Union--History--1939-1945--Congresses.
World War, 1939-1945--Soviet Union--Congresses.