Columbia subject headings:
Judge-made law--Europe.
Lacunae in law--Europe.
Law--Europe--Interpretation and construction.
Harvard subject headings:
Judge-made law--Europe.
Lacunae in law--Europe.
Law--Europe--Interpretation and construction.
Princeton subject headings:
Judge-made law--Europe.
Lacunae in law--Europe.
Law--Europe--Interpretation and construction.