(3Hjf GdfXQjI GdfaSjI hGdeYjGQjI ddEKe (B:s ((3HMK ai WHjYI GdQcf GdeYfhi ddLQjeI(B) /s - (3YeQ GdSYjO QeVGfs ((3GdbGgQI (B:s (3OGQ GdfgVI GdYQHjI ,s, 1990)
(3jTJed Ydj GQLGYGJ HHdjhLQGajI s
Keywords: (3GdfXQjGJ GdeNJdaI aj GdEKe GdLfGFjs; (3GdbGfhf GdLfGFj s