@book{ international1981iaea, title={Methods of Low-level Counting and Spectrometry (Berlin West, 6-10 April 1981)}, series={Proceedings Series}, year={1981}, isbn={92-0-030081-2}, url={http://www.dgdingfa.net/publications/3426/methods-of-low-level-counting-and-spectrometry-berlin-west-6-10-april-1981}, publisher={INTERNATIONAL ATOMIC ENERGY AGENCY}, address={Vienna} }
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