@article{261438,
      author = {Freeman, Louise B.},
      url = {http://library.usi.edu/record/261438},
      title = {Regional subsurface stratigraphy of the Cambrian and  Ordovician in Kentucky and vicinity /},
      recid = {261438},
      pages = {352 p. :},
      address = {Lexington, Ky.,},
      year = {1953},
}