Columbia subject headings:
Culture--Europe--American influences--Congresses.
Music--20th century--History and criticism--Congresses.
Opera--20th century--Congresses.
Popular culture--Germany--American influences--Congresses.
Weill, Kurt, 1900-1950--Criticism and interpretation--Congresses.
Harvard subject headings:
Culture--Europe--American influences--Congresses.
Music--20th century--History and criticism--Congresses.
Opera--20th century--Congresses.
Popular culture--Germany--American influences--Congresses.
Weill, Kurt, 1900-1950--Criticism and interpretation--Congresses.
Princeton subject headings:
Culture--Europe--American influences--Congresses.
Music--20th century--History and criticism--Congresses.
Opera--20th century--Congresses.
Popular culture--Germany--American influences--Congresses.
Weill, Kurt, 1900-1950--Criticism and interpretation--Congresses.