Kishimba, M A, and M J Mihale. “Levels of Pesticide Residues and Metabolites in Soil at Vikuge Farm, Kibaha District, Tanzania – A Classic Case of Soil Contamination by Obsolete Pesticides”. Tanzania Journal of Science 30, no. 2 (April 18, 2021): 77–86. Accessed May 7, 2025. http://www.tjs.udsm.ac.tz/index.php/tjs/article/view/451.