1.
Otenyo Makonjio Philip, Masibayi Namusasi Edward, K’Owino Owino Isaac, China Simiyu Samuel. Efficiency of Pumice-Sand Granular Filter in Removing Effluent Wastes in Shirere Wastewater Treatment Plant in Kakamega County, Kenya. ASRJETS-Journal. 2023;96(1):1-28. Accessed September 20, 2025. https://www.asrjetsjournal.org/American_Scientific_Journal/article/view/9500