Columbia subject headings:
Civilization, Medieval--Congresses.
Liège (Belgium : Province)--History--Congresses.
Notger, bishop of Liège, approximately 930-1008--Congresses.
Harvard subject headings:
Bishops--Belgium--Biography--Congresses.
Civilization, Medieval--Congresses
Liège (Belgium : Province)--History--Congresses.
Notger, bishop of Liège, approximately 930-1008--Congresses.
Princeton subject headings:
Bishops--Belgium--Biography--Congresses.
Civilization, Medieval--Congresses.
Liège (Belgium : Province)--History--Congresses.
Notger, bishop of Liège, approximately 930-1008--Congresses.