Zainal Bakri, Siti Farhana, Azian Hariri, Marzuki Ismail, Samsuri Abdullah, and Nazrul Idzham Kassim. “Evaluation of Respiratory Symptoms, Spirometric Lung Patterns and Metal Fume Concentrations Among Welders in Indoor Air-Conditioned Building at Malaysia”. International Journal of Integrated Engineering 10, no. 5 (November 19, 2018). Accessed July 18, 2024. https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/3038.