@book{ international1975iaea, title={Isotope Ratios as Pollutant Source and Behaviour Indicators (Vienna, 18-22 Nov. 1974)}, series={Proceedings Series}, year={1975}, isbn={92-0-010375-8}, url={http://www.dgdingfa.net/publications/3150/isotope-ratios-as-pollutant-source-and-behaviour-indicators-vienna-18-22-nov-1974}, publisher={INTERNATIONAL ATOMIC ENERGY AGENCY}, address={Vienna} }