Columbia subject headings:
Grattacielo Pirelli (Milan, Italy)
Ponti, Gio, 1891-1979.
Skyscrapers--Italy--Milan.
Harvard subject headings:
Architects--Italy.
Architecture--Italy--History--20th century
Milan (Italy)--Buildings, structures, etc.
Ponti, Gio, 1891---Criticism and interpretation.
Skyscrapers--Italy--Milan--Designs and plans.
Tall buildings--Italy--Milan--Desigs and plans.
Princeton subject headings:
Architecture--Italy--Milan--20th century.
Grattacielo Pirelli (Milan, Italy)
Milan (Italy)--Buildings, structures, etc.
Office buildings--Italy--Milan.
Pirelli, società per azioni--Buildings.
Ponti, Gio, 1891-1979.