(3GdKhQI GdUfGYjI ai HdOGf GdTQb (B/s - (3TjQhchas; (3Sdje JheG s ((3ehSch (B:s (3OGQ GdJbOe (B,s, 1987)
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdeGdjI GdYGeI h GdJTQjY GdVQjHi s; (3GdKhQI GdUfGYjI s