Columbia subject headings:
Occupations and race.
South Africa--Occupations.
South Africa--Race relations.
Harvard subject headings:
Apartheid--South Africa--History
Freedom of movement--South Africa--History.
Migrant labor--South Africa--History.
South Africa--Politics and government.
Urbanization--South Africa--History.
Princeton subject headings:
Apartheid--South Africa--History.
Freedom of movement--South Africa--History.
Migrant labor--South Africa--History.
Urbanization--South Africa--History.