Columbia subject headings:
Art, Comparative--Exhibitions.
Art, Modern--20th century--Exhibitions.
National Gallery (Great Britain)--Exhibitions.
Harvard subject headings:
Appropriation (Art)--Exhibitions.
Art, Modern--20th century--Exhibitions
Arts, Modern--20th century--Exhibitions
Exhibition catalogs.
Princeton subject headings:
Appropriation (Art)--Exhibitions.
Art, Modern--20th century--Exhibitions.