Nagari , Ararso, and Alemayehu Abebaw. 2014. “Evaluation of Metals in Soils Used for Cultivation of Rhamnus Prinoides (Gesho) at Bako Tibe District, Oromiya, Ethiopia”. Journal of Science and Sustainable Development 2 (2):64-78. https://doi.org/10.20372/au.jssd.2.2.2014.033.