Columbia subject headings:
Brüning, Peter, 1929-1970--Catalogs.
Brüning, Peter, 1929-1970--Criticism and interpretation.
Harvard subject headings:
Brüning, Peter, 1929-1970--Catalogues raisonnés.
Princeton subject headings:
Brüning, Peter, 1929-1970--Catalogs.
Brüning, Peter, 1929-1970--Criticism and interpretation.