@book{
      international1991iaea,
      title={Isotope Aided Studies on Goat and Sheep Production in the Tropics},
      author={ },
      series={entity},
      number={ },
      year={1991},
      isbn={92-0-111091-X },
      url={/publications/3731/isotope-aided-studies-on-goat-and-sheep-production-in-the-tropics },
      publisher={INTERNATIONAL ATOMIC ENERGY AGENCY },
      address={Vienna}
    }