Columbia subject headings:
Harvard subject headings:
Cities and towns, Medieval--Congresses
Cities and towns--Europe--History--Congresses
Europe--Politics and government--Congresses.
Metropolitan government--Europe--History--Congresses.
Municipal government--Europe--History--Congresses.
Princeton subject headings:
City and town life--Europe--History.
Middle Ages--Historiography.
Municipal government--Europe--History.
Urbanization--Europe--History.