Columbia subject headings:
Classification and codification--Great Britain.
Classification and codification--United States.
Law--Codification.
Law--Great Britain--History.
Law--United States--History.
Harvard subject headings:
Law--Codification
Law--Great Britain--History
Law--United States--History
Princeton subject headings:
Law--Codification.
Law--Great Britain--History.
Law--United States--History.