“The Feasibility of Using Natural Rocks As Sources of Calcium, Magnesium and Phosphorus in Livestock Feeding in Ethiopia”. Global Journal of Science Frontier Research 14, no. D3 (June 11, 2014): 27–31. Accessed August 14, 2026. https://www.journalofscience.org/index.php/GJSFR/article/view/1150.