@article{173886,
      note = {Issued in folder with 7 folded col. maps.},
      author = {Ellen, Stephen D. and Wentworth, Carl M.},
      url = {http://library.usi.edu/record/173886},
      title = {Hillside materials and slopes of the San Francisco Bay  region, California /},
      publisher = {U.S. G.P.O. ;},
      recid = {173886},
      pages = {iv, 215 p. :},
      address = {Washington :},
      year = {1995},
}