Columbia subject headings:
Strauss, Richard, 1864-1949--Criticism and interpretation--Congresses.
Verdi, Giuseppe, 1813-1901--Criticism and interpretation--Congresses.
Wagner, Richard, 1813-1883--Criticism and interpretation--Congresses.
Harvard subject headings:
Strauss, Richard, 1864-1949--Criticism and interpretation--Congresses.
Verdi, Giuseppe, 1813-1901--Criticism and interpretation--Congresses.
Wagner, Richard, 1813-1883--Criticism and interpretation--Congresses.
Princeton subject headings:
Strauss, Richard, 1864-1949--Criticism and interpretation--Congresses.
Verdi, Giuseppe, 1813-1901--Criticism and interpretation--Congresses.
Wagner, Richard, 1813-1883--Criticism and interpretation--Congresses.