Yousufzai, A H K, Durdana Rais Hashmi, and Kamran Durrani. “?MEASUREMENT OF SULPHUR DIOXIDE AND PMIO AT KORANGI INDUSTRIAL AREA AND PHOTOCHEMICAL OXIDANTS AT UPTOWN AREA OF KARAcm”. Biological Sciences - PJSIR 43, no. 6 (December 18, 2000): 341–346. Accessed July 22, 2024. https://v2.pjsir.org/index.php/biological-sciences/article/view/2065.