@article{9763,
      recid = {9763},
      author = {Ward, Colin R.},
      title = {Mineral matter in the Springfield-Harrisburg (no.5) coal  member in the Illinois basin /},
      publisher = {Illinois State Geological Survey,},
      address = {Urbana :},
      pages = {35 p. :},
      year = {1977},
      note = {Cover title.},
      url = {http://library.usi.edu/record/9763},
}