@article{238454,
      recid = {238454},
      author = {Oman, Charles L. and Finkelman, Robert B. and Tewalt,  Susan J.},
      title = {Concentrations of platinum group elements in 122 U.S. coal  samples [microform] /},
      publisher = {U.S. Dept. of the Interior, U.S. Geological Survey,},
      address = {[Reston, Va.?] :},
      pages = {1 v.},
      year = {1997},
      note = {Shipping list no.: 2000-0902-M.},
      url = {http://library.usi.edu/record/238454},
}