(3ETcGdjI GdOjebQGWjI h GdHOjd GdESdGej aj GdhWf GdYQHj (B/ s - (3GdMSf, NGdOs ((3YeGf (B:s (3OGQ GdLdjd,s, 1988)
Keywords: (3GdYQHs; (3GdCMhGd GdSjGSjIs