Columbia subject headings:
Harvard subject headings:
Communism--Great Britain--History--20th century
Communists--Great Britain--Biography
Wicks, Harry, 1905-1989.
Princeton subject headings:
Communism--Great Britain--History.
Communists--Great Britain--Biography.
Socialists--Great Britain--Biography.
Trotsky, Leon, 1879-1940--Influence.