Columbia subject headings:
Harvard subject headings:
Rugo, Astrid--Art collections--Exhibitions.
Rugo, Wilfried--Art collections--Exhibitions.
Schultze, Bernard, 1915-2005--Exhibitions.
Princeton subject headings:
Rugo, Astrid--Art collections--Exhibitions.
Rugo, Wilfried--Art collections--Exhibitions.
Schultze, Bernard, 1915---Exhibitions.