Iqbal, Muhammad Farooq, Mobushir Riaz Khan, and Amir H. Malik. 2013. “Land Use Change Detection in the Limestone Exploitation Area of Margalla Hills National Park (MHNP), Islamabad, Pakistan Using Geo-Spatial Techniques”. Journal of Himalayan Earth Sciences 46 (1):89-98. http://ojs.uop.edu.pk/jhes/article/view/1662.