Columbia subject headings:
Law--Philosophy--Congresses.
Legislation--Congresses.
Legislation--Europe--Congresses.
Legislation--Philosophy--Congresses.
Harvard subject headings:
Law (Philosophical concept)--Congresses.
Law--Philosophy--Congresses
Legislation--Congresses.
Legislation--Philosophy--Congresses.
Princeton subject headings:
Law (Philosophical concept)--Congresses.
Legislation--Philosophy--Congresses.