“Correlation of Suspended Solids (Ss) and Permanganate Value (Pv) Of Domestic Sewage From An Estate In Warri, Nigeria”. Global Journals of Research in Engineering 12, no. C1 (January 15, 2012): 31–36. Accessed June 6, 2026. https://testing.engineeringresearch.org/index.php/GJRE/article/view/100096.