Columbia subject headings:
Avant-garde (Aesthetics)--History--20th century.
Documenta (1st : 1955)
Harvard subject headings:
Avant-garde (Aesthetics)--History--20th century.
Documenta (1st : 1955 : Kassel, Germany)
Documenta (lst : 1955 : Kassel, Germany)
Princeton subject headings:
Art, European--20th century.
Art, European--Europe.
Avant-garde (Aesthetics)--Europe--History--20th century.
Doccumenta (1st : 1955 : Kassel, Germany)