%O Book %T Worldwide Open Proficiency Test on the Determination of Radionuclides in Spinach, Soil and Water %A %U http://www.dgdingfa.net/publications/8051/worldwide-open-proficiency-test-on-the-determination-of-radionuclides-in-spinach-soil-and-water %D 2009 %I INTERNATIONAL ATOMIC ENERGY AGENCY %C Vienna