Columbia subject headings:
Labor journalism--South Africa--History--20th century.
Labor unions, Black--South Africa--History--20th century.
South African labour bulletin--Indexes.
Harvard subject headings:
Labor journalism--South Africa--History--20th century.
Labor unions, Black--South Africa--History--20th century.
Labor unions--South Africa
Princeton subject headings:
Labor journalism--South Africa--History--20th century.
Labor unions, Black--South Africa--History--20th century.
South African labour bulletin--History.