Columbia subject headings:
Berengo, Marino--Congresses.
Historians--Italy--Biography--Congresses.
Italy--History--20th century--Congresses.
Harvard subject headings:
Berengo, Marino--Congresses.
Historians--Italy--Biography--Congresses.
Italy--History--20th century--Congresses.
Princeton subject headings:
Berengo, Marino.
Historians--Italy--Congresses.
Italy--History--1492-1870--Congresses.