Columbia subject headings:
Catholic Church--Dioceses--Italy--History--Archival resources--Directories.
Church archives--Italy--Directories.
Italy--Church history--Archival resources--Directories.
Harvard subject headings:
Catholic Church--Dioceses--Italy--History--Archival resources--Directories.
Church archives--Italy--Directories.
Italy--Church history--Archival resources--Directories.
Princeton subject headings:
Archives, Diocesan--Italy--Catalogs.
Archives, Diocesan--Italy--Directories.
Catholic Church--Italy--History--Sources--Catalogs.
Italy--Church history--Sources--Catalogs.