@book{ international1969iaea, title={Large Radiation Sources for Industrial Processes (Munich, 18-22 Aug. 1969)}, series={Proceedings Series}, year={1969}, isbn={92-0-060069-7}, url={http://www.dgdingfa.net/publications/2211/large-radiation-sources-for-industrial-processes-munich-18-22-aug-1969}, publisher={INTERNATIONAL ATOMIC ENERGY AGENCY}, address={Vienna} }
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