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Njoku, Akuma-Kalu, Elochukwu Uzukwu, and Sabine Jell-Bahlsen. Interface Between Igbo Theology and Christianity. Newcastle upon Tyne, England: Cambridge Scholars Publishing, 2014.

Njoku, Akuma-Kalu, et al. Interface Between Igbo Theology and Christianity. Cambridge Scholars Publishing, 2014.