@article{199928,
      note = {Distributed to depository libraries in microfiche.},
      author = {Helley, Edward J. and Miller, David M.},
      url = {http://library.usi.edu/record/199928},
      title = {Geologic map of the Newark 7.5 minute quadrangle, Alameda  County, California [microform] /},
      publisher = {The Survey ;},
      recid = {199928},
      pages = {1 map.},
      address = {Menlo Park, Calif. :},
      year = {1992},
}