Columbia subject headings:
Soviet Union--Foreign relations--1917-1945--Sources.
World War, 1939-1945--Diplomatic history--Sources.
Harvard subject headings:
Soviet Union--Foreign relations--1917-1945--Sources.
World War, 1939-1945--Diplomatic history--Sources.
Princeton subject headings:
Soviet Union--Foreign relations--1917-1945--Sources.
World War, 1939-1945--Diplomatic history--Sources.