Columbia subject headings:
Harvard subject headings:
Africa--Bibliography.
Africa--Economic conditions--1960---Bibliography.
Africa--Social conditions--1960---Bibliography.
Economic forecasting--Africa--Bibliography.
Social prediction--Africa--Bibliography.
Princeton subject headings:
Africa--Bibliography.
Africa--Economic conditions--1960---Bibliography.
Africa--Social conditions--1960---Bibliography.
Economic forecasting--Africa--Bibliography.
Social prediction--Africa--Bibliography.