Columbia subject headings:
Harvard subject headings:
Italy, Southern--Economic conditions--Congresses.
Italy, Southern--History--535-1268--Congresses.
Italy, Southern--Population--Congresses.
Italy, Southern--Rural conditions--Congresses.
Italy, Southern--Social life and customs--Congresses.
Natural resources--Italy, Southern--Congresses.
Peasants--Italy, Southern--Congresses.
Princeton subject headings:
Italy, Southern--Economic conditions--Congresses.
Italy, Southern--History--535-1268--Congresses.
Italy, Southern--Population--Congresses.
Italy, Southern--Social conditions--Congresses.
Sicily (Italy)--History--1194-1282--Congresses.