Columbia subject headings:
Harvard subject headings:
Africa, Sub-Saharan--Economic conditions.
Africa, Sub-Saharan--Social conditions.
Economic development--Africa, Sub-Saharan.
Human capital--Africa, Sub-Saharan.
Princeton subject headings:
Africa, Sub-Saharan--Economic conditions--1960-
Africa, Sub-Saharan--Social conditions--1960-
Economic development--Africa, Sub-Saharan.