Columbia subject headings:
Africa, Southern--Emigration and immigration.
Harvard subject headings:
Africa, Southern--Emigration and immigration.
Black people--Employment--South Africa
Labor supply--Africa, Southern.
Migrant labor--South Africa
South Africa--Emigration and immigration.
Princeton subject headings:
Africa, Southern--Emigration and immigration.
Black people--Employment--South Africa.
Migrant labor--South Africa.