Columbia subject headings:
Ethnohistory--Nigeria.
Igbo (African people)
Igbo (African people)--History.
Igbo (African people)--Politics and government.
Nigeria--History.
Harvard subject headings:
Ethnohistory--Nigeria.
Igbo (African people)
Igbo (African people)--History.
Igbo (African people)--Politics and government.
Nigeria--History.
Princeton subject headings: