Columbia subject headings:
Art, Modern--21st century--Exhibitions.
Art, Modern--Private collections--Spain--Exhibitions.
Kagge, Erling--Art collections--Exhibitions.
Harvard subject headings:
Art, Modern--21st century--Exhibitions
Art, Modern--Private collections--Spain--Exhibitions.
Kagge, Erling--Art collections--Exhibitions.
Princeton subject headings:
Art, Modern--21st century--Exhibitions.
Art, Modern--Private collections--Spain--Exhibitions.
Kagge, Erling--Art collections--Exhibitions.