(3GdTGed aj bhGYO GddZI GdCfLdjRjI ddeSJhjGJ GdeJhSWI h GdeJbOeI (B/ s - (3GdedcGhj, MSf CHh TQjbgs ((3YeGf (B:s (3GdDda,s, 2000)
Keywords: (3GddZI GdEfLdjRjIs; (3bhGYO GddZIs