Ø§Ù„Ø¨ÙŠØ§ØªÙŠ, Ø., & Ø®ÙˆØ´Ù†Ø§Ùˆ, Ø. 2018 Oct 10. Ø¯Ø±Ø§Ø³Ø© Ø¨Ø¹Ø¶ Ø§Ù„Ø®ØµØ§Ø¦Øµ Ø§Ù„ÙÙŠØ²ÙŠØ§Ø¦ÙŠØ© Ù„Ù„ØªØ±Ø¨Ø© Ù„Ù…ÙˆØ§Ù‚Ø¹ Ù…Ø®ØªØ§Ø±Ø© ÙÙŠ Ù‚Ø¶Ø§Ø¡ Ø·ÙˆØ² Ø®ÙˆØ±Ù…Ø§ØªÙˆ/ Ø´Ù…Ø§Ù„ÙŠ Ø§Ù„Ø¹Ø±Ø§Ù‚. Tikrit Journal of Pure Science. [Online] 21:7