@article{198689,
      note = {Relief shown by contours and spot heights.},
      author = {Snavely, P. D. and MacLeod, Norman S. and Minasian, Diane  L.},
      url = {http://library.usi.edu/record/198689},
      title = {Preliminary geologic map of the Hebo quadrangle, Tillamook  and Yamhill counties, Oregon [microform] /},
      publisher = {The Survey ;},
      recid = {198689},
      pages = {1 map ;},
      address = {[Reston, Va.] :},
      year = {1993},
}