Columbia subject headings:
Dreyer, Carl Theodor, 1889-1968--Criticism and interpretation--Congresses.
Harvard subject headings:
Dreyer, Carl Theodor, 1889-1968--Criticism and interpretation--Congresses.
Motion picture producers and directors--Denmark--Congresses.
Princeton subject headings:
Dreyer, Carl Theodor, 1889-1968--Criticism and interpretation--Congresses.