Columbia subject headings:
Tuscany (Italy)--Economic conditions--Congresses.
Tuscany (Italy)--Politics and government--Congresses.
Harvard subject headings:
Tuscany (Italy)--Economic conditions--Congresses.
Tuscany (Italy)--Politics and government--Congresses.
Princeton subject headings:
Tuscany (Italy)--Economic conditions--Congresses.
Tuscany (Italy)--Politics and government--Congresses.