Columbia subject headings:
Harvard subject headings:
Art, German--20th century.
Art, German--Germany (East)--Exhibitions.
Art, Modern--20th century--Germany (East)--Exhibitions.
Otto-Nagel-Haus (Berlin, Germany)--Catalogs.
Princeton subject headings:
Art and society--Germany--Exhibitions.
Art, German--20th century--Exhibitions.
Art, German--Exhibitions.
National-Galerie (Germany : East)--Exhibitions.