Columbia subject headings:
Cities and towns--Italy--Tuscany--History--Congresses.
Tuscany (Italy)--History, Local--Congresses.
Tuscany (Italy)--History--To 1434--Congresses.
Harvard subject headings:
Tuscany (Italy)--History--1434-1737--Congresses.
Princeton subject headings:
Cities and towns--Italy--Tuscany--History--Congresses.
Tuscany (Italy)--History, Local--Congresses.
Tuscany (Italy)--History--To 1434--Congresses.