(3GdJMdjd GdcjejGFj HeWjGajI GdCbJUGU GdPQj (B/s - (3eMeO , aGVd LGSe s ((3HZOGO (B:s (3OGQ GdMceI ddWHGYI ,s, 1989)
Keywords: (3GdJMdjd GdcjejGFj s