Columbia subject headings:
Harvard subject headings:
Law--Italy--Ariano Irpino--Sources--Congresses.
Law--Italy--Sicily--Sources--Congresses.
Roger II, King of Sicily, 1095-1154--Congresses.
Princeton subject headings:
Law--Italy--Ariano Irpino--Sources--Congresses.
Law--Italy--Sicily--Sources--Congresses.
Roger II, King of Sicily, 1095-1154--Congresses.