Trung, L., Linh, N., & Thanh Thuy, N. (2007). UTILIZATION OF NATURAL ADSORBENT MATERIALS FOR HEAVY METAL UPTAKE FROM INDUSTRIAL WASTE SLUDGE. Science and Technology Development Journal, 10(1), 63-70. https://doi.org/https://doi.org/10.32508/stdj.v10i1.2745