Columbia subject headings:
Arts, Austrian--20th century--Congresses.
Expressionism (Art)--Austria--Congresses.
Expressionism--Congresses.
Harvard subject headings:
Arts, Modern--20th century--Austria--Congresses.
Expressionism (Art)--Austria--Congresses.
Expressionism--Congresses.
Princeton subject headings:
Arts, Austrian--Congresses.
Arts, Modern--20th century--Congresses.
Expressionism (Art)--Austria--Congresses.
Expressionism--Congresses.