El Awamy, I. O., Abduljalil , R. A. A., & Abduljalil, O. A. A. (2020). Determining the Levels of Some Heavy Metals in Springs and Groundwater Wells in the Northeastern Region of Libya. Al-Mukhtar Journal of Sciences, 35(4), 329-343. https://doi.org/10.54172/mjsc.v35i4.347