Columbia subject headings:
Architecture, Domestic--Italy--Perugia (Province)--History--20th century.
Public housing--Italy--Perugia (Province)--History--20th century.
Harvard subject headings:
Architecture, Domestic--Italy--Perugia (Province)--History--20th century.
Public housing--Italy--Perugia (Province)--History--20th century.
Princeton subject headings:
Architecture, Domestic--Italy--Perugia (Province)--History--20th century.
Public housing--Italy--Perugia (Province)--History--20th century.