Arsalan, Mudassar Hassan. “Geographic Information Systems for Appraisal of Spatial Disparities of Air Pollution in Karachi”. JISR management and social sciences & economics 2, no. 2 (December 31, 2004): 7–14. Accessed November 25, 2024. https://jisrmsse.szabist.edu.pk/index.php/szabist/article/view/396.