Columbia subject headings:
Harvard subject headings:
Law--Europe, Central--History--To 1500.
Law--Europe, Central--Sources.
Law--Interpretation and construction
Princeton subject headings:
Customary law--Europe, Central--History--To 1500.
Customary law--Europe, Central--Sources.
Law--Europe, Central--History--To 1500.
Law--Europe, Central--Sources.
Law--Interpretation and construction.