Columbia subject headings:
Architecture, Romanesque--Italy--Lazio.
Architecture, Romanesque--Italy--Rome.
Church architecture--Italy--Lazio.
Church architecture--Italy--Rome.
Harvard subject headings:
Architecture, Medieval--Italy--Lazio.
Architecture, Medieval--Italy--Rome.
Church architecture--Italy--Lazio.
Church architecture--Italy--Rome.
Mural painting and decoration, Medieval--Italy--Lazio.
Mural painting and decoration, Medieval--Italy--Rome.
Princeton subject headings:
Architecture, Medieval--Italy--Lazio.
Architecture, Medieval--Italy--Rome.
Church architecture--Italy--Lazio.
Church architecture--Italy--Rome.
Mural painting and decoration, Medieval--Italy--Lazio.
Mural painting and decoration, Medieval--Italy--Rome.