@article{135878,
      author = {Soulé, Michael E.},
      url = {http://library.usi.edu/record/135878},
      title = {Viable populations for conservation /},
      publisher = {Cambridge University Press,},
      recid = {135878},
      pages = {x, 189 p. :},
      address = {Cambridge [Cambridgeshire] ;},
      year = {1987},
}