Columbia subject headings:
Harvard subject headings:
Avant-garde (Aesthetics)--Germany--History--20th century--Congresses.
Germany--History--1918-1933--Congresses.
Mass media and culture--Germany--History--20th century--Congresses.
Mass media--Germany--History--Congresses.
Popular culture--Germany--History--20th century--Congresses.
Popular culture--Germany--History--Congresses.
Princeton subject headings:
Avant-garde (Aesthetics)--Germany--History--20th century--Congresses.
Germany--History--1918-1933--Congresses.
Mass media and culture--Germany--History--20th century--Congresses.
Popular culture--Germany--History--20th century--Congresses.