Columbia subject headings:
Law, Medieval--History.
Public law (Roman law)--History.
Public law--Europe--History.
Public law--Italy--History.
Harvard subject headings:
Law, Medieval--History.
Public law (Roman law)--History.
Public law--Europe--History.
Public law--Italy--History.
Princeton subject headings:
Law, Medieval--History.
Public law (Roman law)--History.
Public law--Europe--History.
Public law--Italy--History.