(3GdVQjHI GdehMOI Ydj ONd GdCTNGU GdWHjYjjf (B/s - (3UdGM MSf Ydj SdGeIs ((3GdbGgQI (B:s (3OGQ GdfgVI GdYQHjI ,s, 1999)
(3jTJed Ydj GQLGYGJ HHdjhLQGajI(B.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdVQGFHs; (3GdeGdjI GdYGeI hGdJTQjY GdVQjHjs