@article{241109,
      recid = {241109},
      author = {Christenson, Scott C. and Morton, Robert B. and Mesander,  Benard A.},
      title = {Hydrogeologic maps of the Central Oklahoma Aquifer,  Oklahoma [microform] /},
      publisher = {U.S. Geological Survey ;},
      address = {[Reston, Va.] :},
      pages = {6 maps on 3 sheets :},
      year = {1990},
      note = {Includes text, location map, and stratigraphic column.},
      url = {http://library.usi.edu/record/241109},
}