Columbia subject headings:
Documentary films--History and criticism.
Documentary television programs--History and criticism.
History--Study and teaching--Audio-visual aids.
Motion pictures in education.
Political science--Study and teaching--Audio-visual aids.
Television in education.
Harvard subject headings:
Documentary films--History and criticism
Documentary television programs--History and criticism.
History--Study and teaching--Audio-visual aids
Motion pictures in education.
Political science--Study and teaching--Audio-visual aids.
Television in education.
Princeton subject headings: