Columbia subject headings:
European Union--Europe, Eastern--Congresses.
European Union--Mediterranean Region--Congresses.
Harvard subject headings:
European Union countries--Foreign relations--Mediterranean region--Congresses.
European Union--Europe, Eastern--Congresses.
European Union--Mediterranean Region--Congresses.
Mediterranean Region--Foreign relations--European Union countries--Congresses.
Princeton subject headings:
European Union countries--Foreign relations--Mediterranean region--Congresses.
European Union--Mediterranean Region--Congresses.
Mediterranean Region--Foreign relations--European Union countries--Congresses.