@article{399986,
      recid = {399986},
      author = {Robertson, G. P.},
      title = {Standard soil methods for long-term ecological research  [electronic resource] /},
      publisher = {Oxford University Press,},
      address = {New York :},
      pages = {xvii, 462 p. :},
      year = {1999},
      url = {http://library.usi.edu/record/399986},
}