Columbia subject headings:
Africa, Southern--Economic integration--Congresses.
Africa, Southern--Economic policy--Congresses.
Harvard subject headings:
Africa, Southern--Economic conditions--1975-1994--Congresses.
Africa, Southern--Economic policy--Congresses.
International economic integration--Congresses.
Princeton subject headings:
Africa, Southern--Economic conditions--Congresses.
Africa, Southern--Economic policy--Congresses.
International economic integration--Congresses.