. . . . "An Igbo civilization : Nri kingdom & hegemony" . . . . . . "An Igbo civilization : Nri kingdom and hegemony" . "An Igbo civilization : Nri kingdom" . . . . . . . . . "An Igbo civilization"@en . . . . "An Igbo civilization Nri kingdom & hegemony"@en . . . "An Igbo civilization Nri kingdom & hegemony" . . . . . . . . . . . . . . "Nigeria." . . "Ibo." . . "Politische Organisation." . . "Nri (Nigeria)" . . "Ethnology Nigeria." . . "Ethnology." . . "Ibo." . . "Nri." . . "Igbo (African people)" . .