Columbia subject headings:
Experimental films--History and criticism.
Hein, Birgit, 1942---Interviews.
Harvard subject headings:
Art and motion pictures.
Experimental films--History and criticism.
Hein, Birgit, 1942---Interviews.
Princeton subject headings:
Experimental films--History and criticism.
Hein, Birgit, 1942---Interviews.
Interviews.