@article{363263,
      author = {Margo, Robert A.},
      url = {http://library.usi.edu/record/363263},
      title = {Wages and labor markets in the United States, 1820-1860/},
      publisher = {University of Chicago Press,},
      recid = {363263},
      pages = {xii, 200 p. :},
      address = {Chicago :},
      year = {2000},
}