Columbia subject headings:
Deregulation--European Union countries--Congresses.
Environmental policy--European Union countries--Congresses.
Factory and trade waste--Law and legislation--European Union countries--Congresses.
Harvard subject headings:
Deregulation--European Union countries--Congresses.
Environmental policy--European Union countries--Congresses.
Factory and trade waste--Law and legislation--European Union countries--Congresses.
Princeton subject headings:
Deregulation--European Union countries.