@article{858978,
      author = {Levy, Barry S., and Wegman, David H., and Baron, Sherry  L., and Sokas, Rosemary K.,},
      url = {http://library.usi.edu/record/858978},
      title = {Occupational and environmental health /},
      recid = {858978},
      pages = {1 online resource :},
}