Columbia subject headings:
Italy--History--Congresses.
Princes--Italy--History--Congresses.
Harvard subject headings:
Humanism--Italy--Congresses.
Italy--Civilization--Congresses.
Italy--Historiography--Congresses.
Princeton subject headings:
Humanism--Italy--Congresses.
Italy--Civilization--Congresses.
Italy--Historiography--Congresses.