@book{ internationaliaea, title={Radioisotope Instruments in Industry and Geophysics}, series={Bibliographical Series - IAEA}, number={20}, year={}, isbn={92-0-164066-8}, url={http://www.dgdingfa.net/publications/1536/radioisotope-instruments-in-industry-and-geophysics}, publisher={INTERNATIONAL ATOMIC ENERGY AGENCY}, address={Vienna} }
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