@article{198837,
      note = {Relief shown by contours and spot heights.},
      author = {Matti, Jonathan C.},
      url = {http://library.usi.edu/record/198837},
      title = {Geologic map of the Yucaipa quadrangle, San Bernardino and  Riverside counties, California [microform] /},
      publisher = {The Survey ;},
      recid = {198837},
      pages = {1 map.},
      address = {[Reston, Va.] :},
      year = {1992},
}