@book{
      international1994iaea,
      title={Animal Production and Health Newsletter No. 20, July 1994},
      author={ },
      series={entity},
      number={ },
      year={1994},
      isbn={ },
      url={/publications/4790/animal-production-and-health-newsletter-no-20-july-1994 },
      publisher={INTERNATIONAL ATOMIC ENERGY AGENCY },
      address={Vienna}
    }