Anwar, M. F., Setyarini, A., & Harinta, Y. W. (2025). Utilization of Chicken Bone Waste into Calcium Fertilizer in SMK N 1 Mojosongo Boyolali . IJECS: Indonesian Journal of Empowerment and Community Services, 6(2), 286–293. https://doi.org/10.32585/ijecs.v6i2.6841