@book{ international1980iaea, title={Soil Nitrogen as Fertilizer or Pollutant}, series={Panel Proceedings Series}, year={1980}, isbn={92-0-111080-4}, url={http://www.dgdingfa.net/publications/3366/soil-nitrogen-as-fertilizer-or-pollutant}, publisher={INTERNATIONAL ATOMIC ENERGY AGENCY}, address={Vienna} }
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