@book{ international2014iaea, title={Worldwide Open Proficiency Test for X ray Fluorescence Laboratories PTXRFIAE08: Determination of Minor and Trace Elements in Natural Soil}, author={ }, series={entity}, number={38 }, year={2014}, isbn={ }, url={/publications/10686/worldwide-open-proficiency-test-for-x-ray-fluorescence-laboratories-ptxrfiae08-determination-of-minor-and-trace-elements-in-natural-soil }, publisher={INTERNATIONAL ATOMIC ENERGY AGENCY }, address={Vienna} }