(3LOGhd GdOGQGJ GdeJcGedI (B/ s - (3GdeJfHj, eMeOs ((3HjQhJ (B:s (3OGQ bJjHI ddWHGYI h GdfTQ,s, 1989)
Keywords: (3GdOGQGJ GdEdcJQhfjIs; (3GdEdcJQhfjGJs; (3GdhGUaGJ aj GddZI GdEfLdjRjIs