Columbia subject headings:
Immigrants--Mediterranean Region--Congresses.
Mediterranean Region--Boundaries--Congresses.
Mediterranean Region--Emigration and immigration--Congresses.
Mediterranean Region--Emigration and immigration--Government policy--Congresses.
Mediterranean Region--Emigration and immigration--Social aspects--Congresses.
Migration, Internal--Mediterranean Region--Congresses.
Harvard subject headings:
Immigrants--Mediterranean Region--Congresses.
Mediterranean Region--Boundaries--Congresses.
Mediterranean Region--Emigration and immigration--Congresses.
Mediterranean Region--Emigration and immigration--Government policy--Congresses.
Mediterranean Region--Emigration and immigration--Social aspects--Congresses.
Migration, Internal--Mediterranean Region--Congresses.
Princeton subject headings:
Immigrants--Mediterranean region--Congresses.
Mediterranean Region--Boundaries--Congresses.
Mediterranean Region--Emigration and immigration--Congresses.
Mediterranean Region--Emigration and immigration--Government policy--Congresses.
Mediterranean Region--Emigration and immigration--Social aspects--Congresses.
Migration, Internal--Mediterranean Region--Congresses.