@article{198532,
      note = {Relief shown by contours and spot heights.},
      author = {Sowers, Janet M. and Noller, Jay S. and Lettis, William  R.},
      url = {http://library.usi.edu/record/198532},
      title = {Preliminary maps showing Quaternary geology of the Tracy  and Midway 7.5-minute quadrangles, California [microform]  /},
      publisher = {The Survey ;},
      recid = {198532},
      pages = {2 maps ;},
      address = {[Reston, Va.?] :},
      year = {1993},
}