Columbia subject headings:
Communist Party of Great Britain--History--Sources--Congresses.
Great Britain--Politics and government--1936-1945--Congresses.
World War, 1939-1945--Great Britain--Congresses.
Harvard subject headings:
Communist Party of Great Britain--Congresses.
World War, 1939-1945--Great Britain--Congresses.
Princeton subject headings:
Communism--Great Britain--History--20th century--Congresses.
Communist Party of Great Britain--History--Congresses.
Great Britain--Politics and government--1936-1945--Congresses.