Columbia subject headings:
Art--Italy--Milan--Guidebooks.
Pinacoteca del Castello sforzesco--Guidebooks.
Harvard subject headings:
Milan (Italy)--Guidebooks.
Painting, Italian--Italy, Northern.
Painting--Italy--Milan--Guidebooks.
Pinacoteca del Castello sforzesco--Guidebooks.
Princeton subject headings:
Art--Italy--Milan--Guidebooks.
Guidebooks.
Pinacoteca del Castello sforzesco--Guidebooks.