@article{1378359,
      author = {Graff Zivin, Joshua S. and Perloff, Jeffrey M.},
      url = {http://library.usi.edu/record/1378359},
      title = {The intended and unintended effects of U.S. agricultural  and biotechnology policies/},
      publisher = {University of Chicago Press,},
      recid = {1378359},
      pages = {ix, 298 p. :},
      address = {Chicago :},
      year = {2012},
}