@article{51662,
      recid = {51662},
      author = {Hayes, Philip T.},
      title = {Coal geology of Adams, Blaine, Richardson, and Sitka  quadrangles, Kentucky, and Louisa quadrangle, Kentucky-West  Virginia /},
      publisher = {U.S. G.P.O.,},
      address = {Washington :},
      pages = {68 p. :},
      year = {1981},
      url = {http://library.usi.edu/record/51662},
}