(3GdfXQjI GdSjGSjI GdeYGUQI (B:s (3OQGSI JMdjdjI ebGQfI(B/s - (3eMeO eMeO HOQGf s ((3GdbGgQI (B:s (3OGQ GdfgVI GdYQHjI(B,s, 1997)
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B.s
Keywords: (3GdbGfhf GdOSJhQjs; (3GdfXe GdSjGSjIs