(3EYGOI GdfXQ ai GdCMcGe GdeOfjI hGdLfGFjI hGdYScQjI(B/s - (3YHOGdMejO GdThGQHis ((3GdEScfOQjI (B:s (3efTCI GdeYGQa (B,s, 1987)
(3GdfU HGddZI GdYQHjIs
Keywords: (3bGfhf LfGFjs; (3GdJeGS EYGOI GdfXQs