Columbia subject headings:
Italy--Antiquities.
Lazio (Italy)--Antiquities.
Lazio (Italy)--Historical geography.
Harvard subject headings:
Cities and towns, Medieval--Italy--Lazio.
Italy--Antiquities.
Lazio (Italy)--Antiquities.
Lazio (Italy)--Historical geography.
Princeton subject headings:
Architecture, Italian.
Architecture, Medieval--Italy--Lazio.
Italy--Antiquities.
Lazio (Italy)--Antiquities.