Columbia subject headings:
Africa--Economic policy--Congresses.
Africa--Foreign relations--Congresses.
Debts, External--Africa--Congresses.
Famines--Africa--Congresses.
Technological innovations--Economic aspects--Africa--Congresses.
Harvard subject headings:
Africa--Economic conditions--1960-
Africa--Economic policy--Congresses.
Africa--Foreign relations--Congresses.
Debts, External--Africa--Congresses.
Famines--Africa--Congresses.
Technological innovations--Economic aspects--Africa--Congresses.
Princeton subject headings:
Africa--Economic policy--Congresses.
Africa--Foreign relations--Congresses.
Debts, External--Africa--Congresses.
Famines--Africa--Congresses.
Technological innovations--Economic aspects--Africa--Congresses.