Columbia subject headings:
Harvard subject headings:
Apartment houses--Italy--Milan--History--20th century.
Architecture, Domestic--Italy--Milan--History--20th century.
Public housing--Italy--Milan--History--20th century.
Princeton subject headings:
Apartment houses--Italy--Milan--History--20th century.
Architecture, Domestic--Italy--Milan--History--20th century.
Public housing--Italy--Milan--History--20th century.