Columbia subject headings:
Constitutional law--European Union countries--Congresses.
International and municipal law--European Union countries--Congresses.
Law--European Union countries--International unification--Congresses.
State, The--Congresses.
Harvard subject headings:
Constitutional law--European Union countries--Congresses
International and municipal law--European Union countries--Congresses.
Law--European Union countries--International unification--Congresses.
State, The--Congresses
Princeton subject headings: