Columbia subject headings:
Harvard subject headings:
English drama--20th century--History and criticism
English drama--21st century--History and criticism.
Science in literature.
Theater--Great Britain--History--20th century
Theater--Great Britain--History--21st century.
Princeton subject headings:
English drama--20th century--History and criticism.
English drama--21st century--History and criticism.
Science in literature.
Theater--Great Britain--History--20th century.
Theater--Great Britain--History--21st century.