Lukhabi K, Muia W, Kipkemboi J. Investigating the efficiency of Vertical Sub-Surface Flow Constructed Wetlands in the Reduction of Faecal Indicator Bacteria and Organic matter Under Varied Sizes of Gravel Substrate Aggregates. PASJ [Internet]. 2022 Mar. 28 [cited 2025 Feb. 23];2(01):187-214. Available from: https://panafricajournal.com/index.php/home/article/view/14