Columbia subject headings:
Liguria (Italy)--History--Congresses.
Provence (France)--History--Congresses.
Harvard subject headings:
Liguria (Italy)--History--Congresses.
Provence-Alpes-Côte d'Azur (France)--History--Congresses.
Princeton subject headings:
Liguria (Italy)--History--Congresses.
Provence (France)--History--Congresses.