@book{
      international1968iaea,
      title={Isotope Studies on the Nitrogen Chain (Vienna, 28 Aug.- 1 Sep. 1967)},
      author={ },
      series={entity},
      number={ },
      year={1968},
      isbn={92-0-010068-6 },
      url={/publications/2119/isotope-studies-on-the-nitrogen-chain-vienna-28-aug-1-sep-1967 },
      publisher={INTERNATIONAL ATOMIC ENERGY AGENCY },
      address={Vienna}
    }