@article{216008,
      recid = {216008},
      author = {Howard, Keith A. and John, Barbara E. and Nielson, Jane  E.},
      title = {Preliminary geologic map of the eastern and northern parts  of the Topock 7.5-minute quadrangle, Arizona and California  /},
      publisher = {The Survey,},
      address = {[Reston, Va.?] :},
      pages = {1 map :},
      year = {1997},
      note = {Blue line print.},
      url = {http://library.usi.edu/record/216008},
}