(3TaGA GdZdjd aj Yde GdNdjd (B/ s - (3GdeMdj , eMeO Hf Ydj (B.s; (3UdGM , TYHGf (B.s ((3HjQhJ (B:s (3OGQ GdLjd ,s, 1991)
Keywords: (3GdYQhV hGdbhGaj s -- (3GddZI GdYQHjI s