(3GdeYLe GdeYde (B: s (3bGehS bhGYO GdEedGA (B/ s - (3GdghGQj, eSYOs ((3GdbGgQI (B:s (3ecJHI GdEjeGf ddfTQ h GdJhRjY,s, 1997)
Keywords: (3GddZI GdYQHjIs; (3GdEedGAs