Columbia subject headings:
Architecture--Italy--Milan.
Art, Italian--Italy--Milan.
Milan (Italy)--Buildings, structures, etc.
Harvard subject headings:
Architecture--Italy--Milan--Guidebooks.
Art--Italy--Milan--Guidebooks.
Milan (Italy)--Guidebooks.
Princeton subject headings:
Architecture--Italy--Milan.
Art, Italian--Italy--Milan.
Milan (Italy)--Buildings, structures, etc.