@book{ international2010iaea, title={Reference Material IAEA 434: Naturally Occurring Radionuclides in Phosphogypsum}, series={Analytical Quality in Nuclear Applications Series}, number={17}, year={2010}, url={http://www.dgdingfa.net/publications/8489/reference-material-iaea-434-naturally-occurring-radionuclides-in-phosphogypsum}, publisher={INTERNATIONAL ATOMIC ENERGY AGENCY}, address={Vienna} }
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