Columbia subject headings:
Cities and towns, Medieval--Historiography--Congresses.
Istanbul (Turkey)--Civilization--Congresses.
Istanbul (Turkey)--Historiography--Congresses.
Jerusalem--Civilization--Congresses.
Jerusalem--Historiography--Congresses.
Rome (Italy)--Civilization--Congresses.
Rome (Italy)--Historiography--Congresses.
Harvard subject headings:
Cities and towns, Medieval--Historiography--Congresses.
Istanbul (Turkey)--Historiography--Congresses.
Jerusalem--Historiography--Congresses.
Rome (Italy)--Historiography--Congresses.
Princeton subject headings:
Istanbul (Turkey)--Civilization--Congresses.
Jerusalem--Civilization--Congresses.
Rome (Italy)--Civilization--Congresses.