@article{,
      recid = {237301},
      title = {A guidebook to comparing risks and setting environmental  priorities [microform].},
      publisher = {U.S. Environmental Protection Agency, Office of Policy,  Planning, and Evaluation,},
      address = {[Washington, DC] :},
      number = {EPA 230-B-93-003},
      pages = {1 v. (various pagings) :},
      year = {1993},
      note = {Cover title.},
      url = {http://library.usi.edu/record/237301},
}