Columbia subject headings:
Rural-urban migration--South Africa--Congresses.
South Africa--Race relations--Congresses.
Urban policy--South Africa--Congresses.
Urbanization--South Africa--History--Congresses.
Harvard subject headings:
Rural-urban migration--South Africa--Congresses.
South Africa--Race relations--Congresses.
Urban policy--South Africa--Congresses.
Urbanization--South Africa--History--Congresses.
Princeton subject headings:
Rural-urban migration--South Africa--Congresses.
South Africa--Race relations--Congresses.
Urban policy--South Africa--Congresses.
Urbanization--South Africa--History--Congresses.