@book{
      international1984iaea,
      title={Soil and Fertilizer Nitrogen},
      author={ },
      series={entity},
      number={244 },
      year={1984},
      isbn={92-0-115184-5 },
      url={/publications/1346/soil-and-fertilizer-nitrogen },
      publisher={INTERNATIONAL ATOMIC ENERGY AGENCY },
      address={Vienna}
    }