%O Book %T Worldwide Open Proficiency Test for X ray Fluorescence Laboratories PTXRFIAE08: Determination of Minor and Trace Elements in Natural Soil %A %U http://www.dgdingfa.net/publications/10686/worldwide-open-proficiency-test-for-x-ray-fluorescence-laboratories-ptxrfiae08-determination-of-minor-and-trace-elements-in-natural-soil %D 2014 %I INTERNATIONAL ATOMIC ENERGY AGENCY %C Vienna