Columbia subject headings:
Europe--Church history--600-1500--Congresses.
Europe--Church history--Congresses.
France--Church history--Congresses.
France--Relations--Italy--Congresses.
Italy--Church history--Congresses.
Italy--Relations--France--Congresses.
Harvard subject headings:
France--Religion.
Italy--Religion.
Religious literature, French.
Religious literature, Italian.
Princeton subject headings:
France--Church history--Congresses.
France--Relations--Italy--Congresses.
Italy--Church history--Congresses.
Italy--Relations--France--Congresses.