Ezeugwu Innocent Onyebuchi, Ozoko Daniel Chukwuemeka, and Iyi Emmanuel Chibuike. “SULFUR SPECIATION IN REGOLITH AQUIFERS AT ENUGU, SOUTHEASTERN NIGERIA”. International Journal of Earth & Environmental Sciences (IJEES) 1, no. 1 (November 1, 2016): 15–34. Accessed April 22, 2026. https://ijees.ielas.org/index.php/ijees/article/view/57.