Columbia subject headings:
Cities and towns--Europe--History--To 1500.
Water use--Europe--History--To 1500.
Harvard subject headings:
Municipal water supply--France--History--To 1500.
Water use--France--History--To 1500.
Princeton subject headings:
Cities and towns--Europe, Western--History--To 1500.
Water use--Europe, Western--History--To 1500.