Columbia subject headings:
Harvard subject headings:
Communism--History--20th century--Sources.
Communist International--History--Sources.
Communist parties--History--20th century--Sources.
World War, 1939-1945--Sources.
Princeton subject headings:
Communism--History--20th century--Sources.
Communist International--History--Sources.
Communist parties--History--20th century--Sources.
World War, 1939-1945--Sources.