(3GdKhQI GdYQGHjI (B: s (3eGFI YGe (B/ s - (3YHO GdeLjO, CMeOs ((3GdbGgQI (B:s (3OGQ Gdehba GdYQHj,s, 1981)
Keywords: (3GdJGQjN GdSjGSjs; (3KhQI YQGHj (B1882s; (3JGQjN eUQs