@article{17619,
      recid = {17619},
      author = {Smoot, Thomas William.},
      title = {Clay mineralogy of pre-Pennsylvanian sandstones and shales  of the Illinois basin,},
      address = {Urbana,},
      pages = {14 p. :},
      year = {1960},
      url = {http://library.usi.edu/record/17619},
}