Columbia subject headings:
Harvard subject headings:
Africa, Southern--Economic integration--Congresses.
Africa, Southern--Politics and government--1975---Congresses.
Princeton subject headings:
Africa, Southern--Congresses.
Africa, Southern--Economic conditions--1975-1994--Congresses.
Africa, Southern--Foreign economic relations--South Africa--Congresses.
South Africa--Foreign economic relations--Africa, Southern--Congresses.