Columbia subject headings:
Apartheid--South Africa--Congresses.
Church and industry--South Africa--Congresses.
Industries--South Africa--Congresses.
South Africa--Social conditions--1961-1994--Congresses.
Urbanization--South Africa--Congresses.
Harvard subject headings:
Apartheid--South Africa--Congresses
Church and industry--South Africa--Congresses.
Industries--South Africa--Congresses.
South Africa--Social conditions--1961-1994--Congresses.
Urbanization--South Africa--Congresses.
Princeton subject headings: