Columbia subject headings:
Drama--20th century--History and criticism.
German drama--20th century--History and criticism.
Theater--Germany (West)
Harvard subject headings:
Drama--20th century--History and criticism
German drama--20th century--History and criticism.
Theater--Germany (West)
Princeton subject headings:
Drama--20th century--History and criticism.
German drama--20th century--History and criticism.
Theater--Germany (West).