Columbia subject headings:
Experimental films--History and criticism--Congresses.
Harvard subject headings:
Documentary films--Europe--History and criticism--Congresses.
Experimental films--Europe--History and criticism--Congresses.
Experimental films--Europe--History--20th century--Congresses.
Experimental films--Europe--History--21st century--Congresses.
Motion pictures--Aesthetics--Congresses.
Motion pictures--Social aspects--Europe--Congresses.
Princeton subject headings:
Experimental films--History and criticism--Congresses.