Columbia subject headings:
Decadence in motion pictures--Congresses.
Motion picture music--History and criticism--Congresses.
Motion pictures and opera--Congresses.
Wagner, Richard, 1813-1883--Criticism and interpretation--Congresses.
Harvard subject headings:
Decadence in motion pictures--congresses.
Motion picture music--History and criticism--Congresses.
Motion pictures and opera--Congresses.
Wagner, Richard, 1813-1883--Appreciation--Congresses.
Wagner, Richard, 1813-1883--Criticism and interpretation--Congresses.
Princeton subject headings:
Decadence in motion pictures--Congresses.
Motion picture music--History and criticism--Congresses.
Motion pictures and opera--Congresses.
Wagner, Richard, 1813-1883--Criticism and interpretation--Congresses.