@article{371816,
      author = {Hahn, Steven,},
      url = {http://library.usi.edu/record/371816},
      title = {The political worlds of slavery and freedom [electronic  resource] /},
      publisher = {Harvard University Press,},
      recid = {371816},
      pages = {xvii, 246 p. :},
      address = {Cambridge, Mass. :},
      year = {2009},
}