Columbia subject headings:
Democracy--History--19th century--Congresses.
Mazzini, Giuseppe, 1805-1872--Congresses.
Harvard subject headings:
Princeton subject headings:
Democracy--Europe--History--19th century--Congresses.
Europe--Politics and government--1815-1871--Congresses.
Italy--Politics and government--1815-1870--Congresses.
Mazzini, Giuseppe, 1805-1872--Congresses.