(3GdhSjW ai bGfhf GdYbhHGJ GdbSe GdNGU (B/ s - (3CMeO aJMi SQhQs ((3GdbGgQI (B:s (3OGQ GdfgVI GdYQHjI (B,s, 1985)
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdbGfhf GdLfGFi s; (3bGfhf GdYbhHGJ GdbSe GdNGU s