Columbia subject headings:
Harvard subject headings:
Citroen, Paul Roelof, 1896---Exhibitions.
Citroen, Paul Roelof, 1896---Influence--Exhibitions.
Citroen, Paul Roelof, 1896-1983--Criticism and interpretation.
Citroen, Paul Roelof, 1896-1983--Exhibitions.
Modernism (Art)--Netherlands--Exhibitions.
Princeton subject headings:
Citroen, Paul Roelof, 1896-1983--Criticism and interpretation.
Citroen, Paul Roelof, 1896-1983--Exhibitions.
Modernism (Art)--Netherlands--Exhibitions.