Columbia subject headings:
European Union countries--Commerce--Congresses.
Harvard subject headings:
Developing countries--Commerce--European Union countries--Congresses.
Developing countries--Foreign economic relations--European Union countries--Congresses.
European Union countries--Commerce--Developing countries--Congresses.
European Union countries--Foreign economic relations--Developing countries--Congresses.
Princeton subject headings:
European Union countries--Commerce--Congresses.