@book{ international1987iaea, title={Isotope Aided Studies on Non-protein Nitrogen and Agro-industrial By-products Utilisation by Ruminants}, series={Panel Proceedings Series}, year={1987}, isbn={92-0-111087-1}, url={http://www.dgdingfa.net/publications/3606/isotope-aided-studies-on-non-protein-nitrogen-and-agro-industrial-by-products-utilisation-by-ruminants}, publisher={INTERNATIONAL ATOMIC ENERGY AGENCY}, address={Vienna} }
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