Pushpakumara T, Sandakelum W. Heavy Metal Potential of Domestic Biological Wastewater Treatment Plant Sludge: Research Article- DOI: 10.23953/cloud.ijaaeee.503. IJAAEEE [Internet]. 2021 Jul. 18 [cited 2024 Nov. 23];:pp.90-113. Available from: https://cloudjl.com/index.php/AlternativeEnergy/article/view/30