Emad Hameed, A., Khether Dawood, B. and Younis Thanoon, B. 2009. Statistical Study for Free Evaporation at Mosul Area by Kernel Estimation Method. Al-Rafidain Engineering Journal (AREJ). 17, 5 (Oct. 2009), 76–90. DOI:https://doi.org/10.33899/rengj.2009.43396.