Columbia subject headings:
Finance, Public--Italy--Gemona del Friuli--History--To 1500.
Gemona del Friuli (Italy)--Economic conditions.
Tariff--Italy--Gemona del Friuli--History--To 1500.
Harvard subject headings:
Gemona del Friuli (Italy)--Economic conditions.
Octroi--Italy--Gemona del Friuli--History.
Taxation of articles of consumption--Italy--Gemona del Friuli--History.
Princeton subject headings:
Finance, Public--Italy--Gemona del Friuli--History--To 1500.
Gemona del Friuli (Italy)--Economic conditions.
Tariff--Italy--Gemona del Friuli--History--To 1500.