Columbia subject headings:
Art, Modern--20th century--Exhibitions.
Art, Modern--21st century--Exhibitions.
Installations (Art)--Germany--Frankfurt am Main--Exhibitions.
Harvard subject headings:
Art, Modern--20th century--Exhibitions
Art, Modern--21st century--Exhibitions
Installations (Art)--Germany--Frankfurt am Main--Exhibitions.
Princeton subject headings:
Art, Modern--20th century--Exhibitions.
Art, Modern--21st century--Exhibitions.
Installations (Art)--Germany--Frankfurt am Main--Exhibitions.