@article{195316,
      recid = {195316},
      author = {Dugatkin, Lee Alan,},
      title = {Cooperation among animals : an evolutionary perspective /},
      publisher = {Oxford University Press,},
      address = {New York :},
      pages = {xvii, 221 p. :},
      year = {1997},
      url = {http://library.usi.edu/record/195316},
}