Columbia subject headings:
Church and state--History--To 1500--Congresses.
Church history--Middle Ages, 600-1500--Congresses.
Monasticism and religious orders--History--Middle Ages, 600-1500--Congresses.
Harvard subject headings:
Church and state--History--To 1500--Congresses.
Church history--Middle Ages, 600-1500--Congresses.
Monasticism and religious orders--History--Middle Ages, 600-1500--Congresses.
Princeton subject headings:
Church and state--France--History--Congresses.
Church and state--Germany--History--Congresses.
Church history--Middle Ages, 600-1500--Congresses.
France--History--To 987--Congresses.
Germany--History--To 1517--Congresses.