Columbia subject headings:
Harvard subject headings:
Civilization, Medieval--Study and teaching--Germany--History--19th century--Congresses.
Civilization, Medieval--Study and teaching--Italy--History--19th century--Congresses.
Holy Roman Empire--History--843-1273--Historiography.
Italy--History--476-1268--Historiography.
Princeton subject headings:
Middle Ages--Study and teaching--Germany--19th century--Congresses.
Middle Ages--Study and teaching--Italy--19th century--Congresses.