Columbia subject headings:
Byzantine Empire--Relations--Europe--Congresses.
Civilization, Medieval--Congresses.
Europe--Relations--Byzantine Empire--Congresses.
Europe--Relations--Islamic Empire--Congresses.
Islamic Empire--Relations--Europe--Congresses.
Harvard subject headings:
Byzantine Empire--Relations--Europe--Congresses.
Europe--Relations--Byzantine Empire--Congresses.
Islamic Empire--Relations--Byzantine Empire--Congresses.
Islamic Empire--Relations--Europe--Congresses.
Princeton subject headings:
Civilization, Medieval--Congresses.
Civilization, Western--Islamic influences--Congresses.
East and West--Congresses.
Europe--Civilization--Arab influences--Congresses.
Europe--Relations--Islamic Empire--Congresses.
Islamic Empire--Relations--Europe--Congresses.
Islamic civilization--Western influences--Congresses.
Material culture--Europe--Congresses.
Material culture--Islamic Empire--Congresses.
Middle East--Civilization--European influences--Congresses.