Columbia subject headings:
Harvard subject headings:
Documentary films--Political aspects--Portugal.
Documentary films--Portugal--History and criticism.
Motion pictures in propaganda--Portugal--History.
Motion pictures--Political aspects--Portugal.
Motion pictures--Portugal--History.
Princeton subject headings:
Documentary films--Political aspects--Portugal.
Documentary films--Portugal--History and criticism.
Motion pictures in propaganda--Portugal--History.
Motion pictures--Political aspects--Portugal.
Motion pictures--Portugal--History.