Columbia subject headings:
Harvard subject headings:
Emigration and immigration law--Mediterranean Region.
Greece--Emigration and immigration--Government policy.
Italy--Emigration and immigration--Government policy.
Spain--Emigration and immigration--Government policy.
Princeton subject headings:
Emigration and immigration law--Mediterranean Region.
Greece--Emigration and immigration--Government policy.
Italy--Emigration and immigration--Government policy.
Mediterranean Region--Emigration and immigration.
Spain--Emigration and immigration--Government policy.