Gebreyesus, S. T. (2014) “Heavy Metals in Contaminated Soil: Sources & Washing through Chemical Extractants”, American Scientific Research Journal for Engineering, Technology, and Sciences, 10(1), pp. 54–60. Available at: https://www.asrjetsjournal.org/index.php/American_Scientific_Journal/article/view/730 (Accessed: 15 June 2024).