(3MeGjI GdScGf GdeOfjjf hGdCYjGf GdeOfjI GHGf GdfRGYGJ GdeSdMI (B: s (3OQGSI ebGQfI HGdTQjYI GdESdGejI (B/s - (3CHh GdNjQ CMeO YWjIs ((3GdbGgQI (B:s (3OGQ GdfgVI GdYQHjIs, 1998)
. 189-194 (3HHdjhLQGajG(B: (3UaMGJ(B.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3Mbhb GdEfSGfs; (3GdbGfhf GdOhdj GdYGes