Columbia subject headings:
Art, Modern--Exhibitions.
Art--Private collections--Spain--Alcobendas--Exhibitions.
Vallés, Enrique--Art collections--Exhibitions.
Harvard subject headings:
Art, Modern--Exhibitions
Art--Private collections--Spain--Alcobendas--Exhibitions.
Vallés, Enrique--Art collections--Exhibitions.
Princeton subject headings:
Art, Modern--Exhibitions.
Art--Private collections--Spain--Alcobendas--Exhibitions.
Vallés, Enrique--Art collections--Exhibitions.