Columbia subject headings:
Harvard subject headings:
Culture and law--History--To 1500--Congresses.
Customary law--Europe--History--To 1500--Congresses.
Europe--History--392-814--Congresses.
Law, Byzantine--Congresses.
Law, Frankish--Congresses.
Law, Medieval--Congresses.
Law--Europe--History--To 1500--Congresses.
Roman law--History--To 1500--Congresses.
Princeton subject headings:
Culture and law--Europe--History--Congresses.
Customary law--Europe--History--Congresses.