(3ehShYI GdWH GdfaSj (B: s (3GdcJGH GdLGeY aj GdEVWQGHGJ GdfaSjI h WQb YdGLgG faSjkG (B/ s - (3GdMafj, YHO GdefYes ((3GdbGgQg (B:s (3ecJHI eOHhdj,s, 1999)
Keywords: (3Yde GdfaSs; (3GdWH GdfaSjs; (3GdCeQGV GdYbdjIs