@article{10713,
      author = {Howard, Richard Henry.},
      url = {http://library.usi.edu/record/10713},
      title = {Niagaran reefs and oil accumulation in the DeWitt-McLean  County area, Illinois /},
      publisher = {Illinois State Geological Survey,},
      recid = {10713},
      pages = {15 p. :},
      address = {Urbana :},
      year = {1964},
}