@article{12779,
      author = {Stevenson, D. L.},
      url = {http://library.usi.edu/record/12779},
      title = {Salem limestone oil and gas production in the Keenville  field, Wayne County, Illinois /},
      publisher = {Illinois State Geological Survey,},
      recid = {12779},
      pages = {16 p. :},
      address = {Urbana :},
      year = {1978},
}