Columbia subject headings:
Motion picture producers and directors--Germany--Congresses.
Motion picture producers and directors--United States--Congresses.
Nebenzahl, Heinrich, 1870-1938--Congresses.
Nebenzal, Harold--Congresses.
Nebenzal, Seymour--Congresses.
Nero-Film A.G.--Congresses.
Harvard subject headings:
Nebenzahl, Heinrich, 1870-1938--Congresses.
Nebenzal, Harold--Congresses.
Nebenzal, Seymour--Congresses.
Nero-Film A.G.--History--Congresses.
Princeton subject headings:
Nebenzahl, Heinrich, 1870-1938--Congresses.
Nebenzal, Harold--Congresses.
Nebenzal, Seymour--Congresses.
Nero-Film A.G.--History--Congresses.