(3MbjbI GdEjeGf YfO Cgd GdSfI hGdLeGYI (B/s - (3GdeUQj , eMeO YHO GdgGOj s ((3eUQ (B:s (3OGQ GdaQbGf ,s, 1991)
(3HHdjhLQGajI (B: (3UaMI (B279.s
Keywords: (3GdEjeGf s; (3Cgd GdSfI hGdLeGYIs; (3YbjOI s