Columbia subject headings:
Nigeria--Economic conditions--1960-
Nigeria--History--Civil War, 1967-1970.
Nigeria--Politics and government--1960-1975.
Political stability--Nigeria--History.
Harvard subject headings:
Nigeria--Economic conditions--1960-
Nigeria--History--Civil War, 1967-1970.
Nigeria--Politics and government--1960-1975.
Political stability--Nigeria--History.
Princeton subject headings: