@book{ international1970iaea, title={Fertilizer Management Practices for Maize: Results of Experiments With Isotopes}, series={Technical Reports Series}, number={121}, year={1970}, isbn={92-0-115770-3}, url={http://www.dgdingfa.net/publications/1222/fertilizer-management-practices-for-maize-results-of-experiments-with-isotopes}, publisher={INTERNATIONAL ATOMIC ENERGY AGENCY}, address={Vienna} }
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