Columbia subject headings:
Enlightenment--Italy--Congresses.
Enlightenment--Poland--Congresses.
Italy--History--476-1492--Congresses.
Poland--History--To 1572--Congresses.
Harvard subject headings:
Enlightenment--Italy--Congresses.
Enlightenment--Poland--Congresses.
Italy--History--476-1492--Congresses.
Middle Ages--Congresses
Poland--History--To 1572--Congresses.
Princeton subject headings:
Enlightenment--Congresses.
Italy--Civilization--Congresses.
Italy--Intellectual life--History--Congresses.
Poland--Civilization--Congresses.
Poland--Intellectual life--History--Congresses.