Columbia subject headings:
Europe--Politics and government--1918-1945.
League of Nations.
Soviet Union--Foreign relations--1917-1945.
World War, 1939-1945--Causes.
World politics--1919-1932.
World politics--1933-1945.
Harvard subject headings:
Europe--Politics and government--1918-1945.
League of Nations
Soviet Union--Foreign relations--1917-1945.
World War, 1939-1945--Causes.
World politics--1919-1932
World politics--1933-1945
Princeton subject headings: