(3JQGKfG GdacQj (B:s (3aj ejRGf GdTQY hGdYbd (B.s - (3GdZRGdj , eMeO (B.s ((3ajQLjfjG (B:s (3GdeYgO GdYGdej ddacQ GdGSdGej ,s, 1991)
Keywords: (3GdadSaI GdGSdGejI (B.s