Columbia subject headings:
Harvard subject headings:
Advertising agencies--Germany--Biography.
Advertising agencies--Germany--History.
Advertising--Germany--History.
Weidenmüller, Johannes, 1881-1936.
Princeton subject headings:
Advertising agencies--Germany--Biography.
Advertising agencies--Germany--History.
Advertising--Germany--History.
Weidenmüller, Johannes, 1881-1936.