Columbia subject headings:
Conductors (Music)--Criticism and interpretation--Congresses.
Harnoncourt, Nikolaus--Criticism and interpretation--Congresses.
Harvard subject headings:
Conductors (Music)--Criticism and interpretation--Congresses.
Harnoncourt, Nikolaus--Criticism and interpretation--Congresses.
Princeton subject headings:
Conductors (Music)--Criticism and interpretation--Congresses.
Harnoncourt, Nikolaus--Criticism and interpretation--Congresses.