Columbia subject headings:
Art, Modern--20th century.
Beuys, Joseph--Criticism and interpretation.
Burri, Alberto, 1915-1995--Criticism and interpretation.
Harvard subject headings:
Art, Modern--20th century
Beuys, Joseph--Criticism and interpretation.
Burri, Alberto, 1915-1995--Criticism and interpretation.
Princeton subject headings:
Art, Modern--20th century.
Beuys, Joseph--Criticism and interpretation.
Burri, Alberto, 1915-1995--Criticism and interpretation.