Columbia subject headings:
Painting, German--Germany (West)--20th century--History.
Painting, German--History--20th century.
Harvard subject headings:
Painting, Abstract--Germany--Exhibitions.
Painting, German--Exhibitions
Painting, Modern--20th century--Germany--Exhibitions.
Princeton subject headings:
Painting, German--History--20th century.
Painting, Modern--20th century--Germany (West)--History.