@article{11969,
      recid = {11969},
      author = {Eckholm, Erik P.},
      title = {Disappearing species : the social challenge /},
      publisher = {Worldwatch Institute,},
      address = {[Washington] :},
      pages = {38 p. ;},
      year = {1978},
      url = {http://library.usi.edu/record/11969},
}