@article{712562,
      author = {Heckrath, Goswin.},
      url = {http://library.usi.edu/record/712562},
      title = {Tools for assessing phosphorus loss from Nordic  agriculture [electronic resource] /},
      publisher = {Nordic Council of Ministers,},
      recid = {712562},
      pages = {139 p.},
      address = {Copenhagen :},
      year = {2005},
}