@article{25552,
      recid = {25552},
      title = {Abundance of trace and minor elements in organic and  mineral fractions of coal /},
      publisher = {Illinois Institute of Natural Resources, State Geological  Survey Division,},
      address = {Urbana, Ill. :},
      pages = {vi, 67 p. :},
      year = {1980},
      url = {http://library.usi.edu/record/25552},
}