Columbia subject headings:
Harvard subject headings:
Cities and towns, Medieval--Europe--Congresses.
Cities and towns, Medieval--Europe.
Cities and towns--Economic aspects--Europe--Congresses.
Cities and towns--Economic aspects--Europe.
Cities and towns--Social aspects--Europe--Congresses.
Cities and towns--Social aspects--Europe.
Tourism--Economic aspects--Europe--Congresses.
Tourism--Europe
Tourism--Social aspects--Europe--Congresses.
Tourism--Social aspects--Europe.
Urban economics.
Princeton subject headings:
Cities and towns, Medieval--Europe.
Cities and towns--Social aspects--Europe.
Tourism--Economic aspects--Europe.
Tourism--Social aspects--Europe.
Urban economics--Europe.