Mohammed Kasim, S., Mohammed Youns, A. and Muqdad Mahmood-Agha, omar 2021. Temporal and Spatial Analysis of Drought Using the Standard Precipitation Index for the Northwestern Region of Iraq. Al-Rafidain Engineering Journal (AREJ). 26, 1 (Jun. 2021), 115–127. DOI:https://doi.org/10.33899/rengj.2020.128386.1066.