Johncy, Selvaraj Smilee, K.T. Ajay, G. Dhanyakumar, N. Prabhu Raj, and T. Vivian Samuel. 2011. “Dust Exposure and Lung Function Impairment in Construction Workers”. Journal of Physiological and Biomedical Sciences 24 (1):9-13. https://li01.tci-thaijo.org/index.php/j-pbs/article/view/251004.