Columbia subject headings:
Architecture, Domestic--Italy--Tuscany--History--20th century.
Housing development--Italy--Tuscany--History--20th century.
Istituto nazionale delle assicurazioni--History.
Harvard subject headings:
Architecture, Domestic--Italy--Tuscany--History.
Istituto nazionale delle assicurazioni.
Working class--Dwellings--Italy--Tuscany.
Princeton subject headings:
Architecture, Domestic--Italy--Tuscany--History--20th century.
Housing development--Italy--Tuscany--History--20th century.
Istituto nazionale delle assicurazioni--History.