Columbia subject headings:
Church lands--Germany--History--Congresses.
Economic history--Medieval, 500-1500--Congresses.
Land tenure--Europe--History--Congresses.
Peasants--Europe--History--Congresses.
Harvard subject headings:
Land tenure--Germany--History--Congresses.
Local government--Germany--History--Congresses.
Princeton subject headings:
Land tenure--Germany--History--Congresses.
Local government--Germany--History--Congresses.