Columbia subject headings:
Africa--Civilization--20th century.
Africa--Economic conditions--1960-
African Americans--Relations with Africans.
Harvard subject headings:
Africa--Civilization--20th century.
Africa--Economic conditions--1960-
African Americans--Relations with Africans
Princeton subject headings:
Africa--Civilization--20th century.
Africa--Economic conditions--1960-
African Americans--Relations with Africans.