Columbia subject headings:
Theater--Germany (West)--History--20th century.
Harvard subject headings:
Theater--Germany--History--20th century.
Theater--Germany--Reviews.
Theater--Switzerland--History--20th century.
Theater--Switzerland--Reviews.
Princeton subject headings:
Theater--Germany (West)--History--20th century.
Theater--Germany (West)--Reviews.
Theater--Switzerland--History--20th century.
Theater--Switzerland--Reviews.