(3GdHjFI (B:s (3GdOGA h GdOhGA (B/s - (3GdYWjGJ, GMeO GdaQLs ((3YeGf (B:s (3OGQ GdeSjQI ddfTQ h GdJhRjY h GdWHGYI ,s, 1997)
Keywords: (3GdHjFIs; (3Ydhes