Chibuzor, Stella Nwaife, Elizabeth lfeyinwa Okoyeh, and Boniface Chukwukadibia Ezeanyaoha Egboka. 2020. “Geotechnical Characteristics of Regolith Derived from Nanka Formation, Southeast Nigeria”. European Journal of Engineering and Technology Research 5 (12), 67-75. https://doi.org/10.24018/ejers.2020.5.12.2230.