Shah, J., A. R. Khan, A.- ur-. Rahman, and F. Khan. “ENVIRONMENTAL PROBLEMS AND THEIR CONTROL MEASURES OF A GLASS FACTORY AT PESHAWAR (PAKISTAN)”. Biological Sciences - PJSIR, vol. 47, no. 3, June 2004, pp. 167-75, https://v2.pjsir.org/index.php/biological-sciences/article/view/1491.