Columbia subject headings:
Harvard subject headings:
Africa, Sub-Saharan--Emigration and immigration.
Africans--Spain.
Immigrants--Spain.
Minorities--Spain--Social conditions.
Spain--Emigration and immigration.
Princeton subject headings:
Africa, Sub-Saharan--Emigration and immigration.
Africans--Spain--Social conditions.
Immigrants--Spain--Social conditions.
Spain--Emigration and immigration--Government policy.