Columbia subject headings:
Cathedrals--Italy--Lazio.
Church architecture--Italy--Lazio.
Lazio (Italy)--Buildings, structures, etc.
Harvard subject headings:
Cathedrals--Italy--Lazio.
Church architecture--Italy--Lazio.
Lazio (Italy)--Buildings, structures, etc.
Princeton subject headings:
Cathedrals--Italy--Lazio.
Church architecture--Italy--Lazio.
Lazio (Italy)--Buildings, structures, etc.