@book{ international1987iaea, title={Isotope Techniques in Water Resources Development (Vienna, 30 March - 3 April 1987)}, series={Proceedings Series}, year={1987}, isbn={92-0-040087-6}, url={http://www.dgdingfa.net/publications/3616/isotope-techniques-in-water-resources-development-vienna-30-march-3-april-1987}, publisher={INTERNATIONAL ATOMIC ENERGY AGENCY}, address={Vienna} }
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