@article{114973,
      recid = {114973},
      author = {Van den Berg, Jacob. and Treworgy, Janis D. and Elyn,  Jaclyn Rendall.},
      title = {Petroleum industry in Illinois, 1984.},
      publisher = {Illinois State Geological Survey,},
      address = {Champaign, IL :},
      pages = {140 p. :},
      year = {1986},
      url = {http://library.usi.edu/record/114973},
}