ØµØ¨Ø§Ø Ø¹Ø¨Ø¯ Ø§Ù„ÙˆØ§ØØ¯, Ø., & Ø¬Ù…Ø¹Ø© Ø¹Ø¨Ø¯ Ø§Ù„Ø±ØÙ…Ù†, Ø. 2018 Oct 1. Ø¯Ø±Ø§Ø³Ø© Ù…Ø³ØªÙˆÙŠØ§Øª Ù‡Ø±Ù…ÙˆÙ† Ø§Ù„Ø£ÙŠØ±ÙŠØ«Ø±ÙˆØ¨ÙˆÙŠØªÙŠÙ† Ùˆ Ø§Ù„ÙƒÙ„ÙˆØªØ§Ø«Ø§ÙŠÙˆÙ† Ùˆ Ø§Ù„Ù…Ø§Ù„ÙˆÙ† Ø«Ù†Ø§Ø¦ÙŠ Ø§Ù„Ø¯ÙŠÙ‡Ø§ÙŠØ¯ Ù„Ø¯Ù‰ Ø§Ù„Ù†Ø³Ø§Ø¡ Ø§Ù„Ù…ØµØ§Ø¨Ø§Øª Ø¨ÙÙ‚Ø± Ø§Ù„Ø¯Ù… Ø§Ù„ØÙ…Ù„ÙŠ. Tikrit Journal of Pure Science. [Online] 21:4