Mama, Cordelia Nnennaya, et al. “Mesophillic Anaerobic Co-Digestion of Horse Dung, Plantain Peel and Egg Sheel at Different Climatic Conditions.” International Journal of Environment, Agriculture and Biotechnology, vol. 4, no. 2, 2019, pp. 495–504. Crossref, https://doi.org/10.22161/ijeab/4.2.33.