Columbia subject headings:
Europe--Politics and government--1945---Congresses.
Mediterranean Region--Economic policy--Congresses.
Mediterranean Region--Politics and government--1945---Congresses.
Harvard subject headings:
European Union--Mediterranean Region--Congresses.
Mediterranean Region--Economic policy--Congresses.
Mediterranean Region--Politics and government--1945---Congresses.
Sustainable development--Mediterranean Region--Congresses.
Princeton subject headings: