Columbia subject headings:
Bronzini, Gianfranco, 1967---Catalogs.
Conzett, Jürg--Catalogs.
Gartmann, Patrick, 1968---Catalogs.
Harvard subject headings:
Bronzini, Gianfranco, 1967---Catalogs.
Conzett, Jürg--Catalogs.
Gartmann, Patrick, 1968---Catalogs.
Princeton subject headings: