Irfah, T. et al. 2026. Quality Control of Tapioca Solid Waste (Onggok) as Feedstuff for Beef Cattle Concentrate in Feed Mill Using the Quick Test Method. International Vocational Agriculture Symposium. 1, 1 (Apr. 2026), 75–84. DOI:https://doi.org/10.34145/ivas.v1i1.3845.