@article{198580,
      note = {Distributed to depository libraries in microfiche.},
      author = {Helley, Edward J. and Fitzpatrick, John A. and Bischoff,  James L.},
      url = {http://library.usi.edu/record/198580},
      title = {Uranium-series dates on oyster shells from marine terraces  of San Pablo Bay, California [microform] /},
      publisher = {U.S. Dept. of the Interior, U.S. Geological Survey,},
      recid = {198580},
      pages = {6 leaves :},
      address = {Menlo Park, CA :},
      year = {1993},
}