Columbia subject headings:
Harvard subject headings:
Church and state--Europe--Congresses.
Ecclesiastical law--Europe--Congresses.
Europe--Church history--Congresses.
Germany--Church history--Congresses.
Monasticism and religious orders--Europe--History--Middle Ages, 600-1500--Congresses.
Nobility--Europe--History--Congresses.
Princeton subject headings:
Church and state--Europe--Congresses.
Ecclesiastical law--Europe--Congresses.
Europe--Church history--Congresses.
Germany--Church history--Congresses.
Monasticism and religious orders--Europe--History--Middle Ages, 600-1500--Congresses.
Nobility--Europe--History--Congresses.