Columbia subject headings:
Africa, Sub-Saharan--Economic conditions--1960---Congresses.
Africa, Sub-Saharan--Economic policy--Congresses.
Harvard subject headings:
Africa, Sub-Saharan--Economic conditions--1960---Congresses.
Africa, Sub-Saharan--Economic policy--Congresses.
Princeton subject headings:
Africa, Sub-Saharan--Economic conditions--1960---Congresses.
Africa, Sub-Saharan--Economic policy--Congresses.