Ikram Ullah, Hamid Hussain, Ghulam Sarwar, Zahoor Ahmad and Ikram ud din 2017. A STUDY OF THE RELATIONSHIP BETWEEN PULMONARY FUNCTIONS TESTS AND DUST IN STONE CRUSHING INDUSTRIES WORKERS IN PESHAWAR. JOURNAL OF KHYBER COLLEGE OF DENTISTRY. 7, 3 (Dec. 2017), 2–8. DOI:https://doi.org/10.33279/jkcd.v7i3.534.