Columbia subject headings:
Labor supply--South Africa--History.
Manpower policy--South Africa--History.
Wages--South Africa--History.
Harvard subject headings:
Labor supply--South Africa--History.
Manpower policy--South Africa--History.
Wages--South Africa--History.
Princeton subject headings:
Labor supply--South Africa--History.
Manpower policy--South Africa--History.
Wages--South Africa--History.