Columbia subject headings:
Africa--Economic integration--Congresses.
Africa--Economic policy--Congresses.
Africa--Foreign economic relations--Congresses.
Harvard subject headings:
Africa--Economic integration--Congresses.
Africa--Economic policy--Congresses.
Africa--Foreign economic relations--Congresses.
Princeton subject headings:
Africa--Economic integration--Congresses.
Africa--Economic policy--Congresses.
Africa--Foreign economic relations--Congresses.