@book{
      international1970iaea,
      title={Isotope Techniques for Studying Animal Protein Production from Non-protein Nitrogen},
      author={ },
      series={entity},
      number={111 },
      year={1970},
      isbn={92-0-115470-4 },
      url={/publications/1210/isotope-techniques-for-studying-animal-protein-production-from-non-protein-nitrogen },
      publisher={INTERNATIONAL ATOMIC ENERGY AGENCY },
      address={Vienna}
    }