Khalil, Reswati, Ferawati, Y.F. Kurnia, and F. Agustin. 2017. “Studies on Physical Characteristics, Mineral Composition and Nutritive Value of Bone Meal and Bone Char Produced from Inedible Cow Bones”. Pakistan Journal of Nutrition 16 (6): 426–434. https://doi.org/10.3923/pjn.2017.426.434.