@article{126438,
      author = {Harper, Denver.},
      url = {http://library.usi.edu/record/126438},
      title = {Underground mines in the Survant Coal Member  (Pennsylvanian) of Indiana /},
      publisher = {Indiana Dept. of Natural Resources,},
      recid = {126438},
      pages = {19 p. :},
      address = {Bloomington, Indiana :},
      year = {1988},
}