Columbia subject headings:
Art, Austrian--20th century--Exhibitions.
Art--Austria--Hagen--Exhibitions.
Artists--Austria.
Harvard subject headings:
Art, Austrian--20th century--Exhibitions.
Artists--Austria--Biography.
Künstlerbund Hagen--Exhibitions.
Modernism (Art)--Austria--Exhibitions.
Princeton subject headings:
Art, Modern--20th century--Austria--Exhibitions.
Künstlerbund Hagen--Exhibitions.
Modernism (Art)--Austria--Exhibitions.