Columbia subject headings:
Art, Modern--20th century--Exhibitions.
Art--Private collections--Netherlands--Exhibitions.
Becht, Agnes--Art collections--Exhibitions.
Becht, Frits--Art collections--Exhibitions.
Harvard subject headings:
Princeton subject headings:
Art, Modern--20th century--Exhibitions.
Art--Private collections--Netherlands--Exhibitions.
Becht, Agnes--Art collections--Exhibitions.
Becht, Frits--Art collections--Exhibitions.