@book{
      international1973iaea,
      title={Isotope Techniques in Hydrology , Vol. 2 (1968-1971)},
      author={ },
      series={entity},
      number={41 },
      year={1973},
      isbn={92-0-044073-8 },
      url={/publications/1557/isotope-techniques-in-hydrology-vol-2-1968-1971 },
      publisher={INTERNATIONAL ATOMIC ENERGY AGENCY },
      address={Vienna}
    }