Ehirim, N. C., Essien, U. A., Ikheloa, E., & Nwachukwu, E. U. (2019). Analysis Of Economic Efficiency Of Egg Production In Imo State (Stochastic Frontier Approach). Advances in Social Sciences Research Journal, 6(7), 215–222. https://doi.org/10.14738/assrj.67.6435