Columbia subject headings:
Cities and towns, Medieval--Italy.
Cities and towns, Medieval--Spain.
City dwellers--Italy.
City dwellers--Spain.
Urbanization--Italy.
Urbanization--Spain.
Harvard subject headings:
Cities and towns, Medieval--Europe--History.
Cities and towns, Medieval--Italy--History.
Princeton subject headings:
Cities, Medieval--Italy--Congresses.
Cities, Medieval--Spain--Congresses.
Urban populations--Italy--Congresses.
Urban populations--Spain--Congresses.
Urbanization--Italy--Congresses.
Urbanization--Spain--Congresses.