It locates the place of Yam in Nigeria Society in general and Igbo society in particular. It shows the stages of human development from early time and how these stages evolved with change in human environment. Finally it dealt on state formation which is the super structure of the base.
Emudiaga, E (2020). The Mystery of Yam. Afribary.com: Retrieved July 06, 2020, from https://afribary.com/works/the-mystery-of-yam-1
Ebbah, Emudiaga. "The Mystery of Yam" Afribary.com. Afribary.com, 14 Jun. 2020, https://afribary.com/works/the-mystery-of-yam-1 . Accessed 06 Jul. 2020.
Ebbah, Emudiaga. "The Mystery of Yam". Afribary.com, Afribary.com, 14 Jun. 2020. Web. 06 Jul. 2020. < https://afribary.com/works/the-mystery-of-yam-1 >.
Ebbah, Emudiaga. "The Mystery of Yam" Afribary.com (2020). Accessed July 06, 2020. https://afribary.com/works/the-mystery-of-yam-1