Columbia subject headings:
Harvard subject headings:
Florence (Italy)--History--1860-1945--Congresses.
Italy--Capital and capitol--History--19th century--Congresses.
Italy--Politics and government--1849-1870--Congresses.
Princeton subject headings:
Florence (Italy)--History--1860-1945--Congresses.
Italy--Capital and capitol--History--19th century--Congresses.
Italy--Politics and government--1849-1870--Congresses.