(3ef JhLjgGJ GdTQjYI GdGSdGejI (B/s - (3CMeO YeQ gGTes ((3HhQSYjO (B:s (3ecJHI GdKbGaI GdOjfj,s, 1989)
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdTQjYI GdGSdGejIs