Columbia subject headings:
Art, German--Germany--Berlin--20th century--Exhibitions.
Art, German--Germany--Berlin--Exhibitions.
Harvard subject headings:
Art, German--Germany--Berlin--Exhibitions.
Art, Modern--20th century--Exhibitions
Art, Modern--20th century--Germany--Berlin--Exhibitions.
Princeton subject headings:
Art, German--Germany--Berlin--Exhibitions.
Art, Modern--20th century--Exhibitions.