@article{199816,
      note = {Relief shown by contours and spot heights.},
      author = {Wilshire, Howard Gordon,},
      url = {http://library.usi.edu/record/199816},
      title = {Geologic map of the Indian Spring quadrangle, San  Bernardino County, California [microform] /},
      publisher = {The Survey ;},
      recid = {199816},
      pages = {1 map ;},
      address = {[Reston, Va.?] :},
      year = {1992},
}