“Geotechnical Assessment of Some Clay Deposits in Southwestern Nigeria for Use As Sanitary Landfill Liner”. International Journal of Multidisciplinary and Current Research 5, no. 5 (September 12, 2017): 1061–1067. Accessed August 26, 2026. https://ijmcr.com/index.php/ijmcr/article/view/05.05.09.