Columbia subject headings:
Historic buildings--Conservation and restoration--Italy--Umbria.
Historic sites--Conservation and restoration--Italy--Umbria.
Umbria (Italy)
Urban renewal--Italy--Umbria.
Harvard subject headings:
Historic buildings--Conservation and restoration--Italy--Umbria.
Historic sites--Conservation and restoration--Italy--Umbria.
Umbria (Italy)
Urban renewal--Italy--Umbria.
Princeton subject headings:
Cities and towns--Italy--Umbria.
Historic buildings--Italy--Umbria--Conservation and restoration.
Historic districts--Italy--Umbria--Conservation and restoration.