Hussain, Shabbir, Muhammad Amjad, Hina Ambreen, and Iqra Batool. “Drinking Water Contamination by Heavy Metals in Different Cities of Pakistan”. International Journal of Advanced Chemistry 9, no. 1 (May 22, 2021): 40–43. Accessed May 8, 2024. https://sciencepubco.com/index.php/IJAC/article/view/31529.