(3OQGSGJ aj GdacQ EHf JjejI (B/ s - (3GdYHO, YHO GddWja eMeOs ((3GdbGgQI (B:s (3ecJHI GdfgVI GdeUQjI,s, 1981)
Keywords: (3GdadSaI GdESdGejIs; (3GdJUha GdESdGejs