Columbia subject headings:
Executive power--Nigeria--History--20th century.
Nigeria--Politics and government--1979-1983.
Presidents--Nigeria--History--20th century.
Harvard subject headings:
Executive power--Nigeria--History--20th century.
Nigeria--Politics and government--1979-1983.
Presidents--Nigeria--History--20th century.
Princeton subject headings:
Nigeria--Politics and government--1979-1983.