Ullah, Sana, M. Waqas Javed, Muhammad Shafique, and Shah Faisal Khan. 2014. “An Integrated Approach for Quality Assessment of Drinking Water Using GIS: A Case Study of Lower Dir”. Journal of Himalayan Earth Sciences 47 (2):163-74. http://ojs.uop.edu.pk/jhes/article/view/1698.