Ø±Ø§Ø´Ø¯ Ø¹Ø¨ÙˆØ¯, Ù., Ø¹Ø¨Ø¯ Ø§Ù„ØÙ…ÙŠØ¯ Ø§Ù„Ø¹Ø¨ÙŠØ¯ÙŠ, Ø., & Ø³Ù…ÙŠØ± Ù‚Ø§Ø¯Ø±, Ù. 2018 Oct 1. Ø§Ù„Ø®ÙˆØ§Øµ Ø§Ù„Ø¬ÙŠÙˆØªÙƒÙ†ÙŠÙƒÙŠØ© Ù„Ù„ØªØ±Ø¨Ø© ÙÙŠ Ù…ÙˆØ§Ù‚Ø¹ Ù…Ø®ØªØ§Ø±Ø© Ù…Ù† Ù…Ø¯ÙŠÙ†Ø© ÙƒØ±ÙƒÙˆÙƒ. Tikrit Journal of Pure Science. [Online] 21:4