Columbia subject headings:
Krenek, Ernst, 1900-1991--Congresses.
Krenek, Ernst, 1900-1991--Criticism and interpretation.
Weill, Kurt, 1900-1950--Congresses.
Weill, Kurt, 1900-1950--Criticism and interpretation.
Harvard subject headings:
Krenek, Ernst, 1900-1991--Criticism and interpretation--Congresses.
Weill, Kurt, 1900-1950--Criticism and interpretation--Congresses.
Princeton subject headings:
Krenek, Ernst, 1900-1991--Congresses.
Krenek, Ernst, 1900-1991--Criticism and interpretation.
Weill, Kurt, 1900-1950--Congresses.
Weill, Kurt, 1900-1950--Criticism and interpretation.