Columbia subject headings:
Friuli (Italy)--History--Congresses.
Friuli (Italy)--Relations--Italy--Tuscany--Congresses.
Tuscany (Italy)--Relations--Italy--Friuli--Congresses.
Harvard subject headings:
Friuli (Italy)--History--Congresses.
Friuli (Italy)--Relations--Italy--Tuscany--Congresses.
Tuscany (Italy)--Relations--Italy--Friuli--Congresses.
Princeton subject headings:
Friuli (Italy)--History--Congresses.
Tuscany (Italy)--History--Congresses.