Columbia subject headings:
Africa--Economic conditions--1960-
Africa--Politics and government--1960-
Africa--Social conditions--1960-
Harvard subject headings:
Africa--Economic conditions--1960-
Africa--Politics and government--1960-
Africa--Social conditions--1960-
Princeton subject headings:
Africa--Economic conditions--1960-
Africa--Politics and government--1960-
Africa--Social conditions--1960-