Yassir Kadhim, Amer. “Measurement Copper and Zinc in Al Shamia City SoilSelected by Usingjacson Method”. Al-Qadisiyah Journal of Pure Science 21, no. 1 (August 4, 2018): 92 - 201. Accessed April 29, 2024. https://journalsc.qu.edu.iq/index.php/JOPS/article/view/883.