@book{
      international1997iaea,
      title={Soils Newsletter, Vol. 20, No. 1, July 1997},
      author={ },
      series={entity},
      number={ },
      year={1997},
      isbn={ },
      url={/publications/4884/soils-newsletter-vol-20-no-1-july-1997 },
      publisher={INTERNATIONAL ATOMIC ENERGY AGENCY },
      address={Vienna}
    }