Columbia subject headings:
Africa--Social conditions.
Cities and towns--Africa.
Social classes--Africa.
Working class--Africa.
Harvard subject headings:
Africa--Social conditions.
Cities and towns--Africa
Migrant labor--Africa.
Social classes--Africa
Working class--Africa.
Princeton subject headings:
Africa--Social conditions.
Cities and towns--Africa.
Industrial relations--Africa.
Labor--Africa.
Social classes--Africa.