Columbia subject headings:
Italy--Church history--476-1400--Congresses.
Rural churches--Italy--Congresses.
Harvard subject headings:
Architecture, Early Christian--Italy--Congresses.
Christian antiquities--Congresses.
Church architecture--Italy--Congresses.
Excavations (Archaeology)--Italy--Congresses
Italy--Church history--476-1400--Congresses.
Rural churches--Italy--Congresses.
Princeton subject headings: