Khan, Shaista, Mohammad Ashraf, and Sanaullah Khan Khan. “Assessment of Drought Occurrences in Zhob District Using Standardized Precipitation Index from 1981-2018”. Journal of Geography and Social Sciences (JGSS) 2, no. 2 (December 31, 2020): 110–121. Accessed April 14, 2024. http://jgssjournal.uob.edu.pk/journal/index.php/jgss/article/view/13.