Columbia subject headings:
Equality--Italy--History--Congresses.
Social classes--Italy--History--Congresses.
Social mobility--Italy--History--Congresses.
Harvard subject headings:
Equality--Italy--History--Congresses.
Social classes--Italy--History--Congresses.
Social mobility--Italy--History--Congresses.
Princeton subject headings:
Italy--Economic conditions--Congresses.
Italy--Social conditions--Congresses.
Social mobility--Italy--History--Congresses.