Subagja, R., Rohman, A. D., Milandia, A., Oediyani, S., & Setiawan, I. (2023). A A Preliminary Study of Cobalt Solvent Extraction from Nickel Sulphate Solution Using Organic Extractant-PC-88A. Jurnal Metalurgi, 38(1), 33–40. https://doi.org/10.55981/metalurgi.2023.684