@article{229643,
      recid = {229643},
      author = {Magoon, Leslie B.},
      title = {Petroleum systems of the United States /},
      publisher = {U.S. G.P.O. ;},
      address = {Washington :},
      pages = {iv, 68 p. :},
      year = {1988},
      note = {Prepared by members of the U.S. Geological Survey.},
      url = {http://library.usi.edu/record/229643},
}