@article{216586,
      note = {Cover title.},
      author = {Palmer, Curtis A.},
      url = {http://library.usi.edu/record/216586},
      title = {Modes of occurrence of trace elements in samples from a  coal cleaning plant [microform] /},
      publisher = {U.S. Dept. of the Interior, U.S. Geological Survey,},
      recid = {216586},
      pages = {97 leaves :},
      address = {[Reston, Va.] :},
      year = {1997},
}