@article{228214,
      note = {Data sheets are Tables 12 and 13.},
      author = {Powell, Charles L.},
      url = {http://library.usi.edu/record/228214},
      title = {The Purisima Formation and related rocks (upper Miocene -  Pliocene), greater San Francisco Bay area, central  California review of literature and USGS collection now  housed at the Museum of Paleontology, University of  California, Berkeley / [microform] :},
      publisher = {U.S. Dept. of the Interior, U.S. Geological Survey ;},
      recid = {228214},
      pages = {101 p. :},
      address = {[Reston, Va.?] :},
      year = {1998},
}