Columbia subject headings:
Harvard subject headings:
Emigration and immigration law--Europe, Southern.
Europe, Southern--Emigration and immigration--Government policy.
Europe, Southern--Emigration and immigration.
Human rights--Europe, Southern.
Migration, Internal--Europe, Southern.
Princeton subject headings:
Europe, Southern--Emigration and immigration.
European Union countries--Emigration and immigration--Government policy.
Illegal aliens--Europe, Southern.
Illegal aliens--European Union countries.