@article{161479,
      author = {Peterson, Jocelyn A. and Finkelman, Robert B. and Tewalt,  Susan J.},
      url = {http://library.usi.edu/record/161479},
      title = {Platinum-group elements in sedimentary environments in the  conterminous United States /},
      publisher = {U.S. Geological Survey,},
      recid = {161479},
      pages = {vi, 38 p. :},
      address = {Menlo Park, CA :},
      year = {1993},
}