Columbia subject headings:
Canon law--History.
Church history--Middle Ages, 600-1500.
Europe--Church history--600-1500.
Harvard subject headings:
Canon law--History.
Ecclesiastical law--History.
Europe--Church history.
Europe--Social conditions--To 1492.
Social history--Medieval, 500-1500
Princeton subject headings:
Canon law--History.
Church history--Middle Ages, 600-1500.
Europe--Church history--600-1500.