(3fSGA Mhd GdQShd (B:s (3ahGVd GdfSGA GdebQHGJ ef QShd QH GdSeGA (B/s - (3MdHj, eMehO WYeI(B.s ((3HjQhJ (B:s (3OGQ GdeYQaI,s, 1998)
Keywords: (3GdUMGHI hGdJGHYhfs; (3Cgd HjJ GdQShds; (3GdeQCI GdeSdeIs