Tjoa, A., Christi, L. R., Edy, N., Basri, Z., & Barus, H. (2023). Nickel acquisition affected by root density of mono- and mixed-cropping peanut and choy sum . Jurnal Penelitian Kehutanan Wallacea, 12(1), 19–26. https://doi.org/10.24259/jpkwallacea.v12i1.26615