@book{ international1979iaea, title={Environmental Isotope Data No. 6: World Survey of Isotope Concentration in Precipitation (1972-1975)}, series={Technical Reports Series}, number={192}, year={1979}, isbn={92-0-145179-2}, url={https://www.iaea.org/publications/1293/environmental-isotope-data-no-6-world-survey-of-isotope-concentration-in-precipitation-1972-1975}, publisher={INTERNATIONAL ATOMIC ENERGY AGENCY}, address={Vienna} }