Muhammad Waqar Ashraf (2021) “CONCENTRATIONS OF CADMIUM AND LEAD IN DIFFERENT CIGARETTE BRANDS AND HUMAN EXPOSURE TO THESE METALS VIA SMOKING”, Researchers World - International Refereed Social Sciences Journal, 2(2), pp. 140–147. Available at: https://researchersworld.com/index.php/rworld/article/view/201 (Accessed: 11 August 2025).