Columbia subject headings:
Theater--Austria--Vienna--19th century.
Theater--Austria--Vienna--20th century.
Theater--England--London--History--19th century.
Theater--England--London--History--20th century.
Theater--France--Paris--History--19th century.
Theater--France--Paris--History--20th century.
Theater--Germany--Berlin--History--19th century.
Theater--Germany--Berlin--History--20th century.
Harvard subject headings:
Theater--Europe--History--19th century.
Theater--Europe--History--20th century.
Princeton subject headings:
Theater--Austria--Vienna--19th century.
Theater--Austria--Vienna--20th century.
Theater--England--London--19th century.
Theater--England--London--20th century.
Theater--France--Paris--History--19th century.
Theater--France--Paris--History--20th century.
Theater--Germany--Berlin--History--19th century.
Theater--Germany--Berlin--History--20th century.