Fatama, Kanish, Nasifa Akter, Badhan Saha, Nur -E- Alam Md., and Shimul Chakma. 2024. “Minimization The Chemical Oxygen Demand (COD) Content in Tannery Wastewater Using Activated Carbon from Spent Tea Leaves”. Applied Environmental Research 46 (3). https://doi.org/10.35762/AER.2024036.