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Further reading
S.S.N, Igwe (1991). Social Ethical Issues in Nigeria. Pacific Publishers.
Okod, I. (2007). 'The Peoples and Cultures of Nigeria' in N Ojiakor (ed), Salient Issues in Nigerian History, Culture, and Social Political Development. Enugu: Emmy-Angel Publishers.
Uba, Patricia C. (2005). Effects of the Osu Caste System on Nigerian People's Lives. Pacific Oaks College.{{cite book}}: CS1 maint: location missing publisher (link)