@article{17611,
      recid = {17611},
      author = {Smoot, Thomas William.},
      title = {Clay mineralogy of pre-Pennsylvanian sandstones and shales  of the Illinois basin.},
      address = {Urbana,},
      pages = {20 p. :},
      year = {1960},
      url = {http://library.usi.edu/record/17611},
}