Columbia subject headings:
Harvard subject headings:
Brecht, Bertolt, 1898-1956
Eisler, Hanns, 1898-1962.
Hindemith, Paul, 1895-1963.
Opera--Germany--20th century.
Weill, Kurt, 1900-1950
Princeton subject headings:
Brecht, Bertolt, 1898-1956.
Eisler, Hanns, 1898-1962.
Hindemith, Paul, 1895-1963.
Opera--Germany--20th century.
Weill, Kurt, 1900-1950.