Columbia subject headings:
Harvard subject headings:
Arts--Europe, Eastern--History--20th century--Congresses.
Goetheanum.
Performing arts--Europe, Eastern--History--20th century--Congresses.
Princeton subject headings:
Arts--Europe, Eastern--History--20th century--Congresses.
Goetheanum.
Performing arts--Europe, Eastern--History--20th century--Congresses.