Columbia subject headings:
Art, Modern--20th century.
Art, Modern--21st century.
Art--Philosophy.
Boltanski, Christian, 1944-
Viola, Bill, 1951-
Harvard subject headings:
Art, Modern--20th century
Art, Modern--21st century
Art--Philosophy
Boltanski, Christian, 1944-
Viola, Bill, 1951-
Princeton subject headings:
Art--Philosophy.
Boltanski, Christian, 1944---Criticism and interpretation.
Viola, Bill, 1951---Criticism and interpretation.