Columbia subject headings:
Harvard subject headings:
Germany--Civilization--Historiography--Congresses.
Germany--Civilization--Italian influences--Congresses.
Italy--Civilization--German influences--Congresses.
Italy--Civilization--Historiography--Congresses.
Princeton subject headings:
Historiography--Germany--History--Congresses.
Historiography--History--Congresses.
Italy--History--476-1492--Historiography--Congresses.
Papacy--Historiography--Congresses.