ØØ§Ù…Ø¯, Ø., & Ø§Ø¯Ø±ÙŠØ³, Ù. 2018 Jun 1. Ù…Ø¹ÙˆÙ‚Ø§Øª ØªØ·Ø¨ÙŠÙ‚ Ø¥Ø¯Ø§Ø±Ø© Ø§Ù„Ø¬ÙˆØ¯Ø© Ø§Ù„Ø´Ø§Ù…Ù„Ø© ÙÙŠ Ø§Ù„Ù…Ø³ØªØ´ÙÙŠØ§Øª: Ø¯Ø±Ø§Ø³Ø© ØØ§Ù„Ø© Ù…Ø³ØªØ´ÙÙ‰ Ø§Ù„Ù‚Ø¶Ø§Ø±Ù Ø§Ù„ØªØ¹Ù„ÙŠÙ…ÙŠ. Gezira Journal of Economic and Social Sciences. [Ø¹Ù„Ù‰ Ø§Ù„Ø¥Ù†ØªØ±Ù†Øª] 9:1