Negera, D. “Physicochemical Characteristics Analysis in Niger Seed Edible Oil (Adama) and Linseed Edible Oil (Bishoftu)”. Ethiopian Journal of Science and Sustainable Development, Vol. 5, no. 1, Feb. 2019, pp. 153 -70, doi:10.20372/ejssdastu:v5.i1.2018.72.