Columbia subject headings:
Mahler, Gustav, 1860-1911--Criticism and interpretation.
Harvard subject headings:
Mahler, Gustav, 1860-1911--Criticism and interpretation.
Princeton subject headings:
Mahler, Gustav, 1860-1911--Criticism and interpretation--Congresses.
Mahler, Gustav, 1860-1911--Influence--Congresses.
Modernism (Music)--Congresses.