Tarigan, K., Sihombing, J. ., & Barus, A. (2023). Evaluation the adsorption ability of carbon onion peel on Ca ions. Jurnal Rekayasa, Teknologi Proses Dan Sains Kimia (REPROKIMIA), 2(2), 61–70. Retrieved from https://akses.ptki.ac.id/jurnal/index.php/reprokimia/article/view/133