(3GdEJMGO GdShajjJj (B: s (3JMhdGJ JGQjNjI (B/ s - (3GdTQbGhj, SYGOs ((3OGQ GdfgVI GdYQHjI,s, 1992)
Keywords: (3QhSjGs; (3JGQjN QhSjGs; (3GdKhQI GdQhSjI (B1917s