Rahim Zahid, ATM Zoadur, et al. “FVC, FEV<sub>1< sub> and FEV<sub>1< Sub>% in Male Tobacco Industry Workers”.
Journal of Bangladesh Society of Physiologist
, vol. 6, no. 2, Feb. 2012, pp. 90-93, doi:10.3329/jbsp.v6i2.9757.