Zainal Bakri, S. F., Hariri, A., Ismail, M., & Muhamad Damanhuri, A. A. (2019). Evaluation of Industrial Workplace Exposure to Metal Fumes using Toenail as Bio-Indicator. International Journal of Integrated Engineering, 11(5), 133-139. Retrieved from https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/4607