Columbia subject headings:
Harvard subject headings:
Cinematography--Congresses.
Motion picture theaters--Congresses.
Motion pictures--History--Congresses
Motion pictures--Psychological aspects--Congresses.
Motion pictures--Social aspects--Congresses.
Princeton subject headings:
Cinematography--Congresses.
Motion picture theaters--Congresses.
Motion pictures--History--Congresses.
Motion pictures--Psychological aspects--Congresses.
Motion pictures--Social aspects--Congresses.