Columbia subject headings:
Church history--Middle Ages, 600-1500--Congresses.
Europe--Church history--600-1500--Congresses.
Europe--History--476-1492--Congresses.
Harvard subject headings:
Church and state--Rome--History--To 1500--Congresses.
Church history--Middle Ages, 600-1500--Congresses.
Education, Medieval--Germany--Congresses.
Monasticism and religious orders--History--Middle Ages, 600-1500--Congresses.
Princeton subject headings: