Columbia subject headings:
Kingdom of the Two Sicilies--Economic conditions--19th century.
Kingdom of the Two Sicilies--Social conditions--19th century.
Social structure--Italy--Kingdom of the Two Sicilies--History--19th century.
Harvard subject headings:
Kingdom of the Two Sicilies--Economic conditions.
Kingdom of the Two Sicilies--Social conditions.
Princeton subject headings:
Kingdom of the Two Sicilies--Economic conditions.
Kingdom of the Two Sicilies--Social conditions.