Warly, L., Suyitman, Evitayani, & Fariani, A. (2017). Nutrient Digestibility and Apparent Bioavailability of Minerals in Beef Cattle Fed with Different Levels of Concentrate and Oil-palm Fronds. Pakistan Journal of Nutrition, 16(3), 131–135. https://doi.org/10.3923/pjn.2017.131.135