Columbia subject headings:
Civilization, Medieval--12th century.
Law, Lombard.
Law--Italy--Bologna--History.
Law--Italy--Pavia--History.
Università di Bologna--History.
Harvard subject headings:
Civilization, Medieval--12th century
Education, Medieval--Italy--Bologna.
Law, Lombard.
Law--Italy--Bologna--History.
Law--Italy--Pavia--History.
Università di Bologna--History.
Princeton subject headings:
Civilization, Medieval--12th century.
Law, Lombard.
Law--Italy--Bologna--History.
Law--Italy--Pavia--History.
Università di Bologna--History.