Degefu F, Lakew A, Tigabu Y, Teshome K. The water quality degradation of upper Awash River, Ethiopia. Ethiop. J. Env Stud & Manag [Internet]. 2013 Jan. 22 [cited 2026 Oct. 23];6(1):58-66. Available from: https://www.ajol.info/index.php/ejesm/article/view/84741