@article{798391,
      author = {Johnston, Carol A.},
      url = {http://library.usi.edu/record/798391},
      title = {Beavers : boreal ecosystem engineers /},
      publisher = {Springer,},
      recid = {798391},
      pages = {1 online resource :},
      address = {Cham :},
      year = {2017},
}