Columbia subject headings:
Arts, Modern.
German literature--History and criticism.
Literature, Modern--History and criticism.
Theater--Germany (West)--History--20th century.
Theater--Great Britain--History--20th century.
Harvard subject headings:
Arts, Modern.
German literature--History and criticism
Literature, Modern--History and criticism
Theater--Germany (West)--History--20th century.
Theater--Germany--History--20th century.
Theater--Great Britain--History--20th century
Princeton subject headings:
Arts, Modern.
German literature--History and criticism.
Literature, Modern--History and criticism.
Theater--Germany (West)--History--20th century.
Theater--Great Britain--History--20th century.