Columbia subject headings:
English drama--20th century--History and criticism.
Great Britain--Politics and government--20th century.
Theater--Great Britain.
Theater--Political aspects--Great Britain.
Harvard subject headings:
English drama--20th century--History and criticism
Great Britain--Politics and government--20th century.
Theater--Great Britain.
Theater--Political aspects--Great Britain.
Princeton subject headings:
Great Britain--Politics and government--1945-
Politics and culture--Great Britain--History--20th century.
Theater--Great Britain--History--20th century.
Theater--Political aspects--Great Britain--History--20th century.