Columbia subject headings:
Naples (Italy)--Economic conditions.
Naples (Italy)--History--1734-1869.
Social classes--Italy--Naples--History.
Harvard subject headings:
Naples (Italy)--Economic conditions.
Naples (Italy)--History--1734-1860.
Social classes--Italy--Naples--History.
Princeton subject headings:
Naples (Italy)--Economic conditions.
Naples (Italy)--History--1734-1860.
Social classes--Italy--Naples--History--18th century.
Upper class--Italy--Naples--History--18th century.