Columbia subject headings:
Africa--Economic conditions--1960-
Africa--Politics and government--1960-
Organization of African Unity.
Harvard subject headings:
Africa--Economic conditions--1960-
Africa--Politics and government--1960-
Organization of African Unity
Princeton subject headings:
Africa--Economic conditions--1960-
Africa--Politics and government--1960-
Nkrumah, Kwame, 1909-1972.
Organization of African Unity.