Ù…ÙˆØ³Ù‰ Ù…ØÙ…Ø¯ Ø§Ù„Ø¨ÙŠØ§ØªÙŠ, Ø. 2018 Oct 1. ØªÙ‚Ù†ÙŠØ© ØªÙ‚Ø¯ÙŠØ± Ø§Ù„ÙƒØªÙ„Ø© ÙÙŠ Ø§Ù„Ø¥ØØµØ§Ø¡ Ø§Ù„Ù…ÙƒØ§Ù†ÙŠ Ù…Ø¹ Ø§Ù„ØªØ·Ø¨ÙŠÙ‚. Tikrit Journal of Pure Science. [Online] 21:4