@article{8682,
      author = {Weller, J. Marvin},
      url = {http://library.usi.edu/record/8682},
      title = {Geology and oil possibilities of extreme southern Illinois  : Union, Johnson, Pope, Hardin, Alexander, Pulaski and  Massac Counties /},
      publisher = {Illinois State Geological Survey,},
      recid = {8682},
      pages = {71 p. :},
      address = {Urbana :},
      year = {1940},
}