Columbia subject headings:
Art, Modern--20th century--Exhibitions.
Harvard subject headings:
Art, Modern--20th century--Exhibitions
Beuys, Joseph
Broodthaers, Marcel.
Duchamp, Marcel, 1887-1968
Förg, Günther, 1952-2013
Judd, Donald, 1928-1994.
Man Ray, 1890-1976.
Nauman, Bruce, 1941-
Princeton subject headings: