(3bhGYO GdefY ef GdSaQ (B:s (3OQGSI bGfhfjI ebGQfI (B/s - (3eeOhM eLjO ESMGb s ((3GdbGgQI (B:s (3GdecJHI GdJhajbjI (B,s, 2007)
. 610-593 (3HHdjhLQGajG(B: (3UaMGJ(B.s
(3GdfU CZdHg HGddZI GdYQHjI HYV GdfUhU GdEfLdjRjI hGdaQfSjIs
Keywords: (3GdbGfhf GdOSJhQj s