Columbia subject headings:
Apartheid--Economic aspects--South Africa.
Black people--Employment--South Africa.
Forced labor--South Africa.
Industries--South Africa.
Labor unions--South Africa.
Labor--South Africa.
South Africa--Race relations.
Harvard subject headings:
Princeton subject headings:
Apartheid--South Africa--Economic aspects.
Black people--Employment--South Africa.
Forced labor--South Africa.
Industries--South Africa.
Labor unions--South Africa.
Labor--South Africa.
South Africa--Race relations.