Columbia subject headings:
Communism and culture--Great Britain.
Theater--Great Britain--History--20th century.
Theater--Political aspects--Great Britain.
Harvard subject headings:
Communism and culture--Great Britain.
Communism in literature.
English drama--20th century--History and criticism
Theater--Great Britain--History--20th century
Theater--Political aspects--Great Britain--History--20th century.
Theater--Political aspects--Great Britain.
Princeton subject headings:
Communism in literature.
English drama--20th century--History and criticism.
Theater--Great Britain--History--20th century.
Theater--Political aspects--Great Britain--History--20th century.