Columbia subject headings:
DEFA.
Documentary films--Germany (East)
Ivens, Joris, 1898-1989--Criticism and interpretation.
Harvard subject headings:
DEFA
Documentary films--Germany (East)--History and criticism.
Ivens, Joris, 1898-1989--Criticism and interpretation.
Motion picture producers and directors--Netherlands--Biography.
Motion pictures--Germany (East)--History
Princeton subject headings:
DEFA.
Documentary films--Germany (East).
Ivens, Joris, 1898-1989--Criticism and interpretation.