Columbia subject headings:
Harvard subject headings:
Finance, Public--Italy--Milan--History--18th century.
Tariff--Italy--Milan--History--18th century.
Tax collection--Italy--Milan--History--18th century.
Princeton subject headings:
Finance, Public--Italy--Milan--History--18th century.
Tariff--Italy--Milan--History--18th century.
Tax collection--Italy--Milan--History--18th century.