Akbar, Mustafa Jamal, and Omer Sabah Al-Tamimi. “Ecological Indices of the Heavy Metals in the Soil of Shewasoor Sub-Basin, Kirkuk NE Iraq”. Open Science Journal 3, no. 1 (March 27, 2018). Accessed September 18, 2025. https://osjournal.org/ojs/index.php/OSJ/article/view/1464.