Columbia subject headings:
Nigeria, Southern--Biography.
Nigeria--History--Civil War, 1967-1970--Personal narratives.
Okereke, Titus, 1939-
Harvard subject headings:
College teachers--Nigeria--Biography.
Nigeria--History--20th century.
Nigeria--History--21st century.
Nigeria--History--Civil War, 1967-1970--Personal narratives.
Okereke, Titus, 1939-
Princeton subject headings: