Kitalika A, Machunda R, Komakech H, Njau KN. Assessment of water quality variation in rivers through comparative index technique and its reliability for decision making. Tanz. J. Sci. [Internet]. 2021 Apr. 18 [cited 2025 May 6];44(3):163-91. Available from: http://www.tjs.udsm.ac.tz/index.php/tjs/article/view/570