Columbia subject headings:
Europe--Civilization--Roman influences--Congresses.
Europe--Intellectual life--Roman influences--Congresses.
Latin language, Medieval and modern--Europe--Congresses.
Harvard subject headings:
Europe, Eastern--Relations--Europe--Congresses.
Europe--Relations--Europe, Eastern--Congresses.
Princeton subject headings:
Europe, Eastern--Relations--Europe, Western--Congresses.
Europe, Oriental--Relations--Europe, Western--Congresses.
Europe, Western--Relations--Europe, Eastern--Congresses.