Columbia subject headings:
Art and literature--Germany--History--20th century.
Art and literature--Netherlands--History--20th century.
Kunz, Ludwig.
Harvard subject headings:
Art and literature--Germany--History--20th century.
Art and literature--Netherlands--History--20th century.
Kunz, Ludwig
Princeton subject headings:
Art and literature--Germany--History--20th century.
Art and literature--Netherlands--History--20th century.
Kunz, Ludwig.