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