Columbia subject headings:
Dwellings--Italy--Campagna di Roma--History.
Torre in Pietra (Italy)--History.
Harvard subject headings:
Campagna di Roma (Italy)--History, Local.
Historic buildings--Italy--Campagna di Roma.
Historic sites--Italy--Campagna di Roma.
Princeton subject headings:
Dwellings--Italy--Campagna di Roma--History.
Torre in Pietra (Italy)--History.