@article{19725,
      recid = {19725},
      author = {Voskuil, Walter H. and Risser, Hubert E.,},
      title = {Some economic aspects of the Illinois oil industry},
      publisher = {Illinois State Geological Survey,},
      address = {Urbana,},
      pages = {12 p.},
      year = {1963},
      url = {http://library.usi.edu/record/19725},
}