Columbia subject headings:
Church history--Middle Ages, 600-1500--Congresses.
Monastic and religious life--History--Middle Ages, 600-1500--Congresses.
Harvard subject headings:
Christian ethics--Germany--History--Middle Ages, 600-1500--Congresses.
Christian life--Germany--History--Middle Ages, 600-1500--Congresses.
Germany--Church history--843-1517--Congresses.
Germany--Religious life and customs--Middle Ages, 843-1517--Congresses.
Princeton subject headings: