@article{8674,
      note = {Cover title.},
      author = {Heigold, Paul C.},
      url = {http://library.usi.edu/record/8674},
      title = {Geologic significance of the gravity field in the  DeWitt-McLean County areas, Illinois /},
      publisher = {Illinois State Geological Survey,},
      recid = {8674},
      pages = {16 p. :},
      address = {Urbana :},
      year = {1964},
}