Columbia subject headings:
Harvard subject headings:
Industrial promotion--Italy, Southern--Congresses.
Industrial promotion--Italy--Sicily--Congresses.
Italy, Southern--Economic policy--Congresses.
Sicily (Italy)--Economic policy--Congresses.
Princeton subject headings:
Industrial promotion--Italy, Southern--Congresses.
Industrial promotion--Italy--Sicily--Congresses.
Italy, Southern--Economic policy--Congresses.
Sicily (Italy)--Economic policy--Congresses.