@article{96667,
      author = {Curtis, Paul E.},
      url = {http://library.usi.edu/record/96667},
      title = {Outline of soil fertility and fertilizers /},
      publisher = {Stipes Publishing Company,},
      recid = {96667},
      pages = {v, 250 p. :},
      address = {Champaign, Ill. :},
      year = {1981},
}