Columbia subject headings:
Electric industry workers--Labor unions--South Africa--History.
Electrical and Allied Workers Trade Union of South Africa--History.
Labor unions--South Africa--History.
Harvard subject headings:
Electric industry workers--Labor unions--South Africa--History.
Electrical and Allied Workers Trade Union of South Africa--History.
Labor unions, Black--South Africa--History.
Princeton subject headings:
Electric industry workers--Labor unions--South Africa--History.
Electrical and Allied Workers Trade Union of South Africa--History.
Labor unions, Black--South Africa--History.