Simbolon DR, Sumawinata B, Djajakirana G. The Solubility of Nickel on Mixed Ultramafic Soil with Peat Soil at Saturated and Unsaturated Water Condition. J. Il. Tan. Lingk. [Internet]. 2023 Apr. 1 [cited 2025 Dec. 24];25(1):25-9. Available from: https://journal.ipb.ac.id/jtanah/article/view/45967