Columbia subject headings:
Harvard subject headings:
Africa, North--Emigration and immigration.
European Union countries--Emigration and immigration
Illegal immigration--European Union countries.
Noncitizens--European Union countries
North Africans--Europe.
Refugees--Africa, North.
Princeton subject headings:
Africa, North--Emigration and immigration--Government policy.
Africa, North--Politics and government.
European Union countries--Emigration and immigration.
Illegal aliens--European Union countries.
Migration, Internal--Africa, North.
North Africans--Europe.
Refugees--Africa, North.