Columbia subject headings:
Agriculture--Italy, Southern--History--Congresses.
Italy, Southern--Civilization--Congresses.
Italy, Southern--Description and travel--Congresses.
Italy, Southern--Economic conditions--Congresses.
Naples (Kingdom)--History--1016-1268--Congresses.
Harvard subject headings:
Italy, Southern--Economic conditions--Congresses.
Princeton subject headings:
Agriculture--Italy, Southern--History--Congresses.
Human beings--Effect of environment on--Italy, Southern--Congresses.
Human ecology--Italy, Southern--History--Congresses.
Italy, Southern--Civilization--Congresses.
Italy, Southern--Description and travel--Congresses.
Italy, Southern--Economic conditions--Congresses.
Naples (Kingdom)--History--1016-1268--Congresses.