Columbia subject headings:
Communism--Great Britain--History.
Communist Party of Great Britain--History.
Great Britain--Politics and government--20th century.
Political parties--Great Britain--History.
Harvard subject headings:
Communism--Great Britain--History.
Communist Party of Great Britain--History.
Great Britain--Politics and government--20th century.
Political parties--Great Britain--History
Princeton subject headings:
Communism--Great Britain--History.
Communist Party of Great Britain--History.
Great Britain--Politics and government--20th century.
Political parties--Great Britain--History.